The computer shuts down by itself - 7 most common reasons

"Help, the computer itself turns off!" - Approximately this message can be seen on various forums dedicated to computer themes. Faced the same dilemma? Then you hit the address! Today we will tell you what can lead to spontaneous disconnection of the PC and how to fix it!

The computer itself turns off: the most frequent causes and solutions

1. Overheating of components PC

Let's start with the most common cause of the self-off of the computer: overheating of components. Increasing the operating temperature of the central processor, the graphic accelerator, the power supply and the other "iron" to the critical indicators can easily cause a sharp disconnection of the PC. Overheating arise for various reasons:

  • strong accumulation of dust and other pollutants;
  • defective coolers;
  • Bad air circulation in the system unit;
  • dried thermal panel;
  • Excessive acceleration of components.

Check the temperature of various instruments are simple: it is enough to use the services of a specialized software. There are a lot of programs for measuring temperature and, as a rule, they are distributed completely free. Here is the list of the most popular software for leaving the temperature (and not only!):

  • MSI AfterBurner;
  • Speedfan;
  • Open Hardware Monitor;
  • Core temp;
  • CPU-Z;
  • AIDA64;
  • GPU-Z;
  • Hwmonitor.

We specify the maximum working temperature for each piece of iron on the Internet and process with the data in one of these programs. "Heat" processor? Cleaning the old or installing new cooler, the replacement of the thermal paste. Approximately the same steps are used to the video card. If the southern or north bridge on the motherboard is heated, then the installation of additional radiators can help. As soon as you eliminate overheating, your computer will definite exactly.

2. Power supply fault

The processor is the brain of the computer, and the power supply is its heart. If your PC is constantly running off (or often reboots), then the power supply may be the cause.

Unfortunately, not everyone can carry out accurate diagnosis at home. Nevertheless, there is a couple of obvious signs of faulty BP, which will pass any user. First, skip the BP housing and check how hot air is blowable from it. Secondly, sniffing - is it smelling with something unpleasant?

The answer is obvious when the computer itself turns off, the power supply is not touched, and it hoses from it. In this case, we recommend that you either go to the service so that the guys will try to revive him, or to fork on a new BP.

3. Problems with RAM

RAM (or simply RAM) is another computer component that can call it off if it works incorrectly. The most obvious signs of problems with RAM are blue screens of death, reducing performance and periodic errors when performing certain actions in Windows.

RAM can be checked by system and third-party software. To run the Windows Memory Checking Tool, you need to do the following:

  • Press Win + R to call the "Run" window;
  • Push the value mdsched.exe. and press ENTER;
  • In the window that appears, click on "Run a reboot and check (recommended)".

Next, your computer will restart and standard RAM testing will begin. You can change test parameters using the F1 key - select a wide range of tests for more accurate testing.

Once the RAM test is complete, your PC will restart. Next, you need to go to the "Event Viewer" component and see the test results, which is done like this:

  • press Win + R;
  • write down eventvwr.exe and press ENTER;
  • go to "Windows Logs → System";
  • click on the "Find ..." icon on the right side of the window;
  • write the value MemoryDiagnostics-Results and click "Find Next";
  • double-click the found event and see the test results.

Here you will immediately understand if everything is normal with your RAM or not. If there are any problems with the RAM, then you will probably have to replace it.

4. Problems with HDD / SSD

A hard drive (HDD) or solid state drive (SSD) is a component of a PC that stores an operating system. If this device breaks down or starts to work incorrectly, then problems are guaranteed - to the point that the computer starts to turn itself off.

HDD / SSD problems can be divided into two categories: software and hardware. The first category includes a damaged file system, bad blocks. You can try to fix both using Windows or third-party software. To use the system tool, do the following:

  • open "This PC";
  • right-click on the system drive and select "Properties";
  • go to the "Service" tab and click on "Check";
  • click on the "Check disk" button in another window;
  • wait for the disk check to complete and see the results.

Hardware problems are a little more complicated. Here is a list of possible HDD problems:

  • a failed controller, BMG or preamplifier switch;
  • damaged power or SATA cable;
  • HDD engine wedge;
  • damage to magnetic plates;
  • and other.

An SSD drive, unlike an HDD, has no moving parts and works in much the same way as any flash card. Therefore, some other problems arise with SSD:

  • breakdown of the controller;
  • out of order memory chips;
  • problems with the disk connection interface;
  • and other.

In the event of a hardware failure, you will almost certainly have to contact your local service center for help.

5. Windows specific settings

It is possible that your computer shuts down by itself because your Windows has quite specific settings. Spontaneous shutdown of the PC can occur if parental control is installed or the presence of a corresponding task in the scheduler. In the first case, everything is clear: we are trying to persuade our parents to remove restrictions, or we are trying to fit in with reality.

PC shutdown tasks can be created by a variety of software. For example, users very often forget to uncheck the option that is responsible for shutting down the PC in the installer of a program or game. Antiviruses, media players, recording utilities, file download managers, etc. - all this can create an automatic shutdown task on your computer.

Just be careful when working at the computer and it will never turn itself off.

6. Viruses and malware

Certain viruses and untrustworthy programs can harm your PC to a great extent - so much so that it will shut itself down. If none of the above applies to you, then we advise you to scan Windows for viruses. If you recently installed software, get rid of it. We test the system and see if it helped.

7. Own negligence

Decided to clean your disc from any rubble? You could delete the files critical for the OS, especially if cleaning was performed in the Windows folder on the system section. And now that the OS is trying to access remote files, an error occurs and the PC completes the work. In such a situation, it is better to use the restoration of Windows or completely reinstall it at all.

The situation did not change? The computer itself turns off, despite all your actions? It's time to go to the service center ...

What to do if the computer turns off by itself.
What to do if the computer turns off by itself.

The question "why the computer turns off by itself" sets a large number of people, from children to adults. And from novice users to professional computerists. Faced the problem of spontaneous shutdown of the computer, in my case it is a laptop. I will tell you about all this in this article and will explain how to avoid an arbitrary off of the computer.

Causes of computer shutdown:

One of the reasons for the disconnection of the computer is overheating of the processor. Dust passing through the cooler (fan) of the processor is assembled on the radiator grille and clogs the holes for ventilation. Subsequently, heat exchange is disrupted, the temperature of the radiator increases and the processor overheating occurs. Next, the computer simply turns off, which in turn is harmful for the hard disk (HDD). Correct the situation can be easily and fast. It is required to remove the radiator from the processor. Next, we separate the cooler (fan) from the radiator (if it is physically possible) and a good taste. Cooler also clean the tassel.

Be careful when cleaning the fan blades, a strong physical impact can damage the blades or disrupt the balance.

If the fan is not removed from the radiator, then we clean the brush and vacuum cleaner.

Basically, computers suffer from overheating in the summer and when you play your favorite games.

Next reason for overheating and off the computer is a thermalcaste:

The thermalcaste is thick, liquid, powdery, the solution that is applied before assembling the computer. Between the processor and the radiator in order to increase the thermal conductivity and reduce the temperature of the processor. Nothing is forever and the thermalcase can also lose its properties. If your computer has served not a short time, then think about changing the thermal paste. Everything is done very simple:

  • Remove the radiator from the processor.
  • Carefully clean the cleaning discs of the surface of the processor and the radiator.
  • We apply a new layer a new thermal chaser on the processor so that when docking parts, the paste did not spread from the sides. By this prevent the motherboard contact.

Bad air circulation:

With the active use of the computer especially in the summer. When some components saw dinosaurs and it's time for them to landfill. But you want to eliminate the problem of arbitrary off the computer without changing the components. There is always a way out, it is necessary only to strain the brains and look for an alternative. Let's try to reduce the temperature to improve the circulation of the system unit. If there are empty ventilation grilles in the system unit, then install additional coolers in them. Also pay attention to the old, clean and smear them. If some cooler spins too weakly, makes a strong noise, try to replace it with a new one. Pay attention to the cooler power unit, replace it with a new one. Make sure that the system unit would not be closed on all sides the place between the wall and the table. Otherwise, the temperature will increase.

I almost forgot, as I said at the beginning of the article, my laptop began to overheat, the reason lay in poor circulation. It is not surprising what kind of circulation we can talk about when there is nowhere to circulate air. The laptop has only one cooler that cools the processor heatsink. I found a solution to the problem quickly and it was not expensive. This is a laptop stand with a cooling cooler and mindless led lighting. Which is not visible when the laptop is installed on the stand.

The laptop stopped overheating, but a strong drop in temperature is not observed, no matter how advertisements promise us.

Computer power supply:

With such power surges as in our country, power supplies have to be replaced every 2-4 years. But not always the cause of the breakdown is power outages. Sometimes a lot of dust can be the cause. The symptoms of a breakdown of a power supply are mainly as follows:

  • The computer can shutdown at any time, regardless of the load.
  • It may turn off during the loading of the operating system, or even during the boot of the BIOS.

What can I advise you? Open the power supply:

  • Try to clean it from dust with a vacuum cleaner.
  • Lubricate the cooler for better performance or change to a new one.
  • Check capacitors for swelling.

Swollen capacitors look like this:

What to do if the computer turns off by itself.
What to do if the computer turns off by itself.

Same RAM may also cause the computer to shut down. In this case, the computer may turn off during games, especially modern ones that consume a lot of resources. The problem may still be in the motherboard. ... If parts of the motherboard fail, you will not be able to solve the problem on your own. I recommend contacting a professional computer repair shop. Or buy a new one.

And lastly, check all the contacts with the mains. Poor contact can cause constant blackouts. Check the outlet, 220V power cable, power wires in the system unit.

Original post: What to do if the computer turns off by itself

Spontaneous shutdown or restart of the computer is quite common. Inexperienced users are often confused by it: they cannot solve the problem themselves and bring the PC to the service. However, you shouldn't do this. In most cases, you can fix the problem yourself.

The computer shuts down by itself

The computer shuts down by itself

Reasons for spontaneous shutdown and restart

There are several hardware malfunctions or software malfunctions that cause the computer to shutdown unexpectedly. Here they are:

  • malfunction or insufficient power supply unit;
  • overheating of the processor;
  • breakdown of the keyboard;
  • failure of the shutdown button;
  • problems with other components
  • presence of virus programs in the system.

Let's consider each of them in more detail.

Power Supply

Like any other component in a PC, a power supply will wear out over time or can break. In such a situation, he often, without the knowledge of the user, stops the supply of electric current to the rest of the components or does not supply it in full. The opposite situation is also possible: an overvoltage current is supplied from the power supply unit due to the wear of the resistors or the burnout of the jumpers, which leads to a protective shutdown of the system. Such a malfunction is dangerous because the PC may not turn off, but simply burn out. Most often, in such cases, processors and motherboards are on fire.

The computer shuts down by itself

A problem with the power supply can cause the computer to shut down unexpectedly.

In addition, shutdown may occur due to a lack of power in the unit. This usually happens when new components with a sufficiently high power consumption are placed in a PC with a relatively weak power supply. Most often it is a processor or video adapter. During an increased load (usually during the launch of video games), the parts of the block get very hot and can reach temperatures of 70 - 80 degrees Celsius. When the power supply overheats, the protection mechanism is triggered, and it automatically turns off. For this reason, the power supply to the rest of the PC stops, and it also stops working.

To find out if the power supply is really the cause of the machine shutting down, you need to try connecting another power source to the computer. To do this, you need to take the following actions.

  1. Remove the side cover of the system unit, having previously unscrewed the bolts holding it (they are located at the back of the case).

    The computer shuts down by itself

    Unscrew the bolts holding the side cover, remove it

  2. Carefully disconnect the power supply wires that transmit electricity to the disks, processor, motherboard and video card.

    The computer shuts down by itself

    Disconnect the power supply wires from all components

  3. Remove the screws that secure the power supply to the chassis. They are also found on the back of the PC case.

    The computer shuts down by itself

    We unscrew the screws with which the power supply is attached to the case

  4. Remove the power supply from the case. This must be done very carefully: this element of the PC is quite heavy, and if you drop it on the motherboard, you can damage it.

Then they take another power supply, connect it in reverse order and try to turn on the computer with it. If the PC is working normally, then the cause of the problems was really in the power supply, and if the situation has not changed and the machine still turns off, you need to continue looking for the problem.


Most modern CPUs have a built-in temperature sensor. In the event of a significant increase, it sends a signal to the BIOS and it automatically stops the system.

To find out the CPU temperature, you can use the AIDA program. All system readings can be seen directly on the main screen of the application in the "Computer" section of the "Sensors" subsection. This information looks like this.

The computer shuts down by itself

In the "Computer" section of the "Sensors" subsection, we find information about the temperature of the components

What temperature the processor should have without load can be found on the manufacturer's website. For most modern CPUs, it is 30-35 degrees Celsius, for processors of previous generations, its value may be slightly higher. If in "Aida" you see that the processor is very hot, you can try to replace the thermal paste.

For most processors, if not overclocked, even the simplest cooling system is sufficient. However, over time, the thermal paste that is applied to the processor surface before installing the cooler dries up and the CPU does not completely transfer heat to the heatsink. This leads to overheating.

Here's what it takes to update the CPU thermal interface.

  1. Open the housing cover by unscrewing the screws behind it.

    The computer shuts down by itself

    Unscrew the bolts holding the side cover, remove it

  2. Disconnect the cpu fan wire from the motherboard.

    The computer shuts down by itself

    Disconnecting the processor fan wire from the motherboard

  3. Open the latches on the CPU cooler.

    The computer shuts down by itself

    Opening the CPU cooler latches

  4. Raise the cooler carefully.

    The computer shuts down by itself

    Raising the cooler carefully

    Important! If you have an AMD processor, you need to be very careful: it can stick to the cooler substrate due to the drying of the thermal paste and fall out of the socket when the cooling system is removed. If you don't notice this in time, you can easily bend the legs of the CPU.

  5. Clean old thermal paste from the processor. This can be done with a cotton pad or cotton swab and any solvent: acetone, alcohol, "647". Even nail polish remover will work. For cleaning, put some solvent on cotton wool and wipe the CPU cover with it. The lower part of the cooler adjacent to the processor is cleaned in the same way.

    The computer shuts down by itself

    We clean the processor from the old thermal paste with a cotton swab dipped in solvent

  6. Squeeze some thermal paste onto the processor cover and spread it evenly. You cannot do this with your fingers: human skin contains fat, which impairs thermal conductivity. It is better to use a plastic card or a small spatula to apply the paste, which comes with some manufacturers' pastes.

    The computer shuts down by itself

    Apply a little thermal paste to the processor, spread it evenly with a spatula or card over the surface

  7. Install the cooling system in reverse order.

As soon as the work is finished, you can turn on the PC and start "AIDU". The CPU temperature should drop. This ensures that there will be no overheating under load, which will cause the PC to shut down.

You can buy thermal paste at any computer store. It is often sold in regular consumer electronics stores as well. The cheapest one like KPT-8 is not worth taking, such pastes do not conduct heat in the best way. But too expensive is not needed - often it is an overpayment for advertising and a brand. The optimal price of thermal paste is 300 - 500 rubles per tube containing 1.5 - 3 grams of the substance. Deepcool pastes have proven themselves well - they are inexpensive and of sufficient quality. They also come with a handy paddle.

The computer shuts down by itself

Deepcool Thermal Grease is the best option for replacing on a processor Deepcool Thermal Grease is the best option for replacing on a processor


Some "advanced" keyboards have a shutdown or reboot button. It often happens that it sinks or a closure occurs in it. This also leads to the shutdown of the PC without the user's knowledge or to its constant reboot. In the event of such symptoms, you should try to start the computer by connecting another keyboard to it. If this does not help, then other factors caused the malfunction.

The computer shuts down by itself

If the Power button malfunctions, the computer may turn off

Off button

Another common reason for turning off or restarting a computer on its own is a faulty PC power button. To check if it really caused the problem, you need to do the following.

  1. Open the side housing cover by unscrewing the screws at the rear.

    The computer shuts down by itself

    Unscrew the bolts holding the side cover, remove it

  2. Find the connectors at the bottom of the motherboard to connect the wires to the power button. They are two small metal pins labeled "pwr". Remove the contacts put on the pins.

    The computer shuts down by itself

    We find connectors for connecting wires, remove the contacts put on the pins

  3. Close the pins with any metal object, wait for the PC to turn on and let it run for a while. If everything is fine, it was the button that caused the problem. You can buy a new one at any computer hardware store.

    The computer shuts down by itself

    We close the pins with any metal object

Other components

Other components, for example, a video card, motherboard or RAM, can also cause spontaneous shutdown.

Video card

Usually, the PC turns off when the video card becomes unusable (for example, it has a chip dump). In addition, the BIOS of the card can initiate shutdown of the system in case of severe overheating of the device by sending a corresponding signal to the BIOS of the motherboard. For example, this feature is present in some AMD RX series adapters, as they can reach quite high temperatures during operation.

Here's what you need to check if a video card is working properly in a similar situation.

  1. Remove the side cover after unscrewing the bolts holding it.

    The computer shuts down by itself

    Unscrew the bolts holding the side cover, remove it

  2. Disconnect the power supply cable from the video adapter, if any.

    The computer shuts down by itself

    Disconnect the power supply cable from the video adapter

  3. Unscrew the screws holding the card.

    The computer shuts down by itself

    Unscrew the bolts holding the card

  4. Press down on the lever located in the PCI-E slot and holding the adapter and carefully remove it.

    The computer shuts down by itself

    Click on the lever located in the PCI-E slot, remove it

  5. Try to start the computer with a different card or on the graphics core built into the processor, if there is one. Integrated graphics are present in all Intel processors (except for Xeon server models), but not always in AMD CPUs. This must be remembered.


In order to understand if RAM is the cause of the problem, you need to do the following.

  1. Unscrew the screws at the rear of the housing and remove its side cover.

    The computer shuts down by itself

    Unscrew the bolts holding the side cover, remove it

  2. Find the location of the RAM on the motherboard.

    The computer shuts down by itself

    Finding the location of the RAM on the motherboard

  3. Open the clips holding the memory strip.

    The computer shuts down by itself

    Opening the latches holding the memory bar

  4. Remove the strip and put another in its place. You can try to put the memory in a different slot, sometimes it also helps.

    The computer shuts down by itself

    We remove the bar and put another one in its place


Damage to the motherboard can also lead to shutdown. In order to understand whether this part of the PC is serviceable or not, you first need to visually inspect it. As a rule, swollen capacitors or carbonized parts indicate a malfunction.

The computer shuts down by itself

We inspect the motherboard visually, pay attention to swollen capacitors or parts with carbon deposits

If they are found, it is better to take the PC to a service, since replacing parts of the motherboard will be too difficult for a person if he has not previously dealt with radio electronics.


The reason for spontaneous shutdown and startup of a PC is often various malicious programs that are installed in the system themselves. To check your computer for their presence, you can use the popular Dr.Web utility. Its advantages are that it is completely free and does not require installation.

Here's what you need to do to do this.

  1. Go to the program download page located at:
  2. Click "Download Dr.Web Curelt!"

    The computer shuts down by itself

    Click "Download Dr.Web Curelt!"

  3. When the download of the application is complete, launch it by clicking on the corresponding icon.

    The computer shuts down by itself

    Click "Start check"

  4. Wait until the end of the check and see its results.

    The computer shuts down by itself

    We are waiting for the end of the check and see its results

The user is no longer required to take any action. The utility itself will check the PC for viruses and if it finds them, it will remove them. She will inform about this after the end of the check.

Instead of the Dr.Web utility, you can install some free anti-virus. Today they provide the user with a set of functions that is in no way inferior to that of their paid counterparts. AVG or Avast can act as such an antivirus.

What to do if none of the methods worked

If you have tried all the methods described above, but none of them brought the desired result, it is better to take the computer to a specialized workshop. Of course, the services of specialists will cost money, but there is simply no other way to bring the computer back to life in such a situation.

Video - Computer shuts down by itself

The computer shuts down by itself

Today we will talk about such a nuisance as a sudden shutdown of the computer. This is probably one of the worst situations that can be. After all, it may well turn out that you did not save an important document, or a computer game was interrupted during a crucial battle, or the film ended at the most interesting moment.

Yes, the situation is unpleasant, but fixable. In this article, we will consider in detail all the possible causes of a breakdown and give valuable advice and recommendations on how to fix it.


If your computer shuts down by itself, then first you need to correctly classify the breakdown. If you manage to catch some regularity of this process, then it will be easy to find out the reason why this is happening. And already further and eliminate it.

Computer shuts down during boot

This symptom indicates the failure of some component of the system unit, i.e. there is definitely a problem with the "hardware". Most often this is a motherboard or power supply. This can happen due to a short circuit inside the system, or the device has simply worked out its life.

If your power supply unit is already on the verge of failure, then this may be the reason that the computer will turn off at the boot stage. The power supply unit cannot supply the required voltage and current with the components of the system unit. As a result, they cannot start.

You can check this with a multimeter. But if you do not have it or do not know how to use it, then look for another power supply and try to start the computer with it. If you succeed, then we can assume that you have found the culprit.

Checking the power supply using a multimeter

Checking the power supply using a multimeter

Power button sticks

Sometimes it happens that the PC power button itself sticks or gets stuck when pressed. As a result, the contact does not open completely, which leads to the shutdown of the computer at startup. This happens if the case of the system unit is already old, or there are small children at home who like to play around with this button.

Carefully disassemble the case and see if there is a problem with the button. Perhaps a spring has fallen off or the mechanism is faulty. If there really is a problem, but cannot be repaired, then you will have to buy a new case. Separately, the button is unlikely to be found somewhere.

This is what the button looks like if you take it out of the case.

This is what the button looks like if you take it out of the case.

Short circuit in the system unit

As a rule, many peripheral devices are connected to any system unit. In addition, there are some other components inside the case. Sometimes it happens that a small short circuit may occur at the connection point of any of the devices. As a result, the computer turns on and off after a few seconds.

We recommend that you first turn off all peripherals: printer, scanner, speakers, etc. If this does not help, then open the case. Visually inspect the insides and check the reliability of all contacts. It is advisable to take out all the components, clean the contacts, remove the dust.

Defective motherboard

If the previous points did not help, then there is a high probability that you have problems with the motherboard. And it is quite possible that the computer will turn off after some time after being turned on, even at the boot stage.

It is very difficult to diagnose yourself at home. Moreover, not having enough experience and the necessary equipment. But there is still something that can be done.

Open your system unit and take a close look at the motherboard. If you find burnt or blackened contacts on it, then the point is definitely in it. It is also worth looking for swollen and leaking capacitors. If you find it, you will have to buy a new "motherboard".

This is what swollen capacitors look like.

This is what swollen capacitors look like.

It's hard to believe, but it also happens that the reason for the shutdown of the computer at boot time may be trivial problems with grounding. Nobody even thought about grounding in apartments and houses of old buildings. Although, in principle, it is necessary always and everywhere, and no equipment and electrical appliances should work without it.

If you have a new apartment or private house, then this problem should not be. Of course, if your electricians did everything conscientiously and did not cheat when laying the wiring.

The computer suddenly turns off during the game, running programs, the Internet

Problems can be hidden both in the hardware (again, "hardware") and in the software. But since the operating system is still loaded for some time, then it can be localized by conducting several tests with special programs. Or you can contact our service center for help.

Now let's look at a few specific reasons why the computer might shut down.

Computer shuts down due to viruses

Or maybe a virus is to blame?

Or maybe a virus is to blame?

This is one of the most common reasons, which has been relevant for many years, and there are no prospects for it to disappear in the near future. Computer viruses are very diverse today: some delete all files on the PC, others damage the operating system or block it. That is, if the computer began to shut down itself, then this may well be a consequence of the fact that a virus infection has occurred.

Probably, it is not worth saying that an antivirus must be installed on every PC or laptop - this is a common truth. At least any, tk. it will be better than nothing. In addition, it must be regularly updated, otherwise the meaning of its installation disappears.

If your computer shuts down unexpectedly when running programs or browsing the Internet, then do a full scan of the operating system. During this process, it is advisable not to do anything in parallel. If you find any viruses, then remove them and reboot the system.

Sometimes it can help "rollback" the system to an earlier date - before the PC began to shut down. To do this, find the "System Restore" item in the "Start" menu and select the appropriate date.

Restoring the system to a previous state

Restoring the system to a previous state

If the virus has managed to severely damage Windows, then the recovery work will be more complicated and a simple system scan or "rollback" will not help here. In this case, you can contact our company for help here at this link.

Lack of power supply

It so happens that the power supply unit simply does not have enough power to "pull" the work of all components. This usually happens after upgrading the system unit, when they decided to save money and carry it out without replacing the power supply. If the upgrade is still only in your plans, then here you can read how to correctly calculate the power of the required power supply.

Why is this happening? For example, you installed a new processor and graphics card to improve graphics and performance. Each of these devices will require slightly more power than their predecessors.

And as soon as you start a game or a serious graphics program, your processor and video card start to work at their maximum capabilities. And you did not change the power supply unit for a more powerful one. As a result, the old one cannot cope with the load and the PC is cut down.

Choose the right power supply

Choose the right power supply

Also, a sudden shutdown of the computer can occur due to the drying out of electrolytic capacitors. As a result, the electrical parameters of the entire device deteriorate. Power supply malfunctions can also occur due to power surges in the network. Partially or completely faulty power supply unit will have to be changed. You can read more about what a power supply is and its characteristics.

Severe overheating of the processor or video card

This malfunction manifests itself most often during games or work in resource-intensive programs. Less often when watching movies or videos on the Internet. The computer shuts down by itself to prevent a complete failure of the device, which is overheating.

It is quite simple to detect overheating of any of the PC devices: you need to use the Aida64 or Everest programs. After starting, open the sensors section. It displays the temperature of various PC components. If the value exceeds 60 degrees Celsius, then it's time to think about the problems with the cooling system.

Most often, overheating occurs due to a fan stop, due to the drying out of the thermal interface between the processor and the heatsink of the cooling system, or due to a large accumulation of dust. It is commonplace dust that interferes with the normal operation of the same fans. In fifty percent of cases, dust is the cause of failure of system unit components.

We recommend vacuuming your system unit at least 2-3 times a year (if you wish, you can and more often), so that one day you will not be faced with the question "why does the computer turn itself off during the game?" How to clean the system unit from dust and change thermal paste can be found in this article.

You shouldn't be led to this

You shouldn't be led to this

If the computer crashes while playing, then the problem is most likely in the video card. It can either overheat (what to do in this case, you can read in more detail), or not work at all.

The video card is responsible for everything that you see on the display - images and photographs, films, games. And it is usually not repaired, but immediately replaced with a new one. Although, if the card is expensive, then sometimes it is more profitable to fix it. Here you can order repairs and find out prices.

Simple tips if your computer shuts down by itself

And finally, there may be simpler answers to the question "why does the computer suddenly turn off?". Therefore, before sounding the alarm, carry out the following manipulations, which may quickly eliminate the "breakdown".

  • Check the connections of all cables from the power supply.
  • If possible, move the video card to a different slot.
  • Reinstall memory modules and other components inside the system unit.
  • Vacuum the inside of the PC case.

If you have not been able to independently determine the reason why the computer turns off by itself, then you can contact the Compolife computer help center. The experts of our service will accurately determine the reason why your PC turns off and fix the malfunction.

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Good afternoon friends. Why does my computer turn off by itself Windows 7 10 and how to fix it? I already wrote a similar article, only there it was about turning off the computer during the game. These topics are very similar, but there are differences. So let's think about why it turns itself off, and how it can be prevented. Although, to be honest, there can be a lot of reasons.

Hands from the tailbone

Why does the computer turn off after a certain time?

So, let's start to understand. First, through the "Start" we enter the "Parameters". We choose "Personalization".

Hands from the tailbone

In the new window, select in the left column "Lock screen", then, "Screen saver options".

Hands from the tailbone

Why did we do all this? To check if the "Start at login screen" command is unchecked or not.

Hands from the tailbone

So, we return to the "parameters", select "System", then, "Power and sleep mode". In this window, we must check that the settings are at the "Never" mark (if you have no problems with shutdown, I advise you to set the "Screen" to 30 minutes, "Sleep" to 2 hours.).

Hands from the tailbone

So, click on "Additional power options".

Hands from the tailbone

Then, click on "Create Power Scheme".

Hands from the tailbone

Let's say you followed the steps described earlier. But, these actions did not help you much. The computer also shuts down without your consent. In this case, there is a possibility that an intruder has appeared on your computer. I mean the virus. In this case, you just need to do a full scan of the PC.

If you do not have antivirus installed, I advise you to download the free Dr.Web CureIt antivirus. This antivirus is one day. This means that on what day you suspected something was wrong with the computer, on the same day you should download Dr.Web CureIt since it is not updated. Therefore, you need the latest version.

So, download it from the link above. Having entered the site, put a checkmark everywhere, otherwise, you will not download it for free.

Hands from the tailbone

Also, it is advisable to see which of the programs are launched together with the computer. This is quite simple to do. Press the three keys Ctrl + Alt + Del at once. We select "Task Manager". In the manager, select "Startup" and consider programs that are not needed during startup. Then, turn them off.

Hands from the tailbone

What causes the computer to shut down by itself?

  1. Voltage instability in the power supply;
  2. Drivers can conflict with each other;
  3. Weak power supply unit (I used to have a computer turned on only the second time because of a weak power supply unit);
  4. The mains cable may come off the power supply;
  5. There is a problem in the hard disk (malfunction);
  6. Your processor's thermal paste has burned out (try not to let it go);
  7. The capacitors are swollen (this can happen if you have never cleaned the system unit); Hands from the tailbone
  8. Problems with the North Bridge, it can burn out;
  9. Conflict between programs. Essentially similar to a conflict between drivers. For example, if you have installed several antiviruses, then 90% that they will conflict with each other. One will mistake the other for a virus. Of course, there are not conflicting antiviruses, but most do not like each other;
  10. Outdated operating system. Troubles can occur if you have new hardware and an old OS is installed, for example, Windows XP;
  11. Your OS is not installed correctly, or it crashed during installation. This also includes poor quality OSes. Most often, this happens when you install an OS from an unknown manufacturer;
  12. Components of the computer are poorly inserted into their slots. The way out is pretty simple. With the computer turned off, check all the components. How do they fit, tight or not ?;
  13. The motherboard and processor are not compatible. Usually, in this case, the computer turns off after about half an hour. Maybe more often;
  14. The computer is very dusty. In this case, one thing remains, just clean the computer from dust;
  15. Unnecessary devices are connected to the USB connector. Previously, when computers were equipped with an input for a floppy disk, the computer might not turn on because of the floppy disk left. This also happens because of flash drives and other devices. If you have a USB flash drive connected to it and you rarely use it, then it is better to remove the USB flash drive. I have had cases when the computer did not start because of a flash drive, just like because of a floppy disk.

Why the computer turns on by itself the solution to the problem

  1. If you have an unstable voltage in the mains, purchase an uninterruptible power supply unit;
  2. Drivers. Remember which drivers you recently installed, or which new device you connected? Disconnect the device and remove the installed driver. If the computer stops shutting down, a solution has been found. If not, it remains to google, or refer the PC to the master, since there can be many solutions on this issue. In addition, do not forget to create system restore points to rollback at the right time;
  3. A weak power supply, or not, can be understood by the behavior of the computer. For example, by hanging. Or just check the instructions for the devices connected to your computer. How many watts of energy do they need? Calculate and buy a PSU 10% more capacious than your devices require. In any case, a stronger PSU will not hurt;
  4. If the cable is poorly inserted into the power supply, you need to insert it harder. This applies to all nodes of the computer. If the part is screwed to the computer case, check all the bolts and tighten them firmly. Hands from the tailbone
  5. I wrote about how to check a hard disk drive for bad sectors in one of my articles. Therefore, follow the link and find out.
  6. If your processor starts to overheat quickly, it is possible that the thermal paste has dried out. The processor temperature can be found using the Speccy program. If it is higher than the norm, it is better to refer the system unit to the master. I do not advise you to change the thermal paste yourself, unless, of course, you have similar experience.
  7. As for the capacitors, I advise you to just smell the motherboard, i.e., check it for a burning smell. Anyway, the swollen capacitors will be visible. In this case, it is also necessary to take the PC to a service center.
  8. The North Bridge can burn out due to dust, power surges, etc. What can I say? Clean the system unit from dust often. If it burns out, you need to contact the service center. Hands from the tailbone
  9. Regarding the conflict of programs, install only one decent antivirus firewall on your computer, for example ESET. If you really want one more, then you can install Malwarebytes. It perfectly protects your computer and does not conflict with other antiviruses. There used to be a free version, which was quite enough. Now, unfortunately, only a demo.
  10. If you have new hardware, install Windows 10, or Mac, only modern, and there will be no problems.
  11. Purchase a licensed system and, if you cannot install it correctly, contact a person who can do it. Or, you can purchase a clean build from a verified site.
  12. I have already said about poorly inserted computer parts. Insert them correctly and the problem goes away.
  13. If the motherboard and processor are not compatible, enter the correct name of your motherboard and see which processor is suitable for it. Unfortunately, sometimes in computer stores they assemble PCs with incompatible parts (this mainly happens when the seller sees that you do not understand the PC well. In this case, you need to go to the store with a knowledgeable person, or before going to the store, just find out from the Internet which parts are suitable for your board and which are not.Also, you can contact the service center, consult with them, and ask the wizard to install the required processor.
  14. As for the dustiness of the computer, you just need to clean it from dust. If your laptop is dusty, take it to a technician. Do not clean your laptop yourself.
  15. As for the USB connector, I've already said everything. Just take out the USB stick and the problem will go away.

Output: - I gave 15 problems due to which the computer turns on and off itself, after a certain time. Also, I have given answers to these questions. But, in fact, there are more such problems. If you had another problem and solved it, please share your experience in the comments. Good luck!

Best regards, Andrey Zimin 06/10/2019

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I am more than sure that my blog is not the first place where you are looking for an answer to the question "why does the computer turn off." Hopefully this is the last place you look for a possible cause and how to fix it.

Recently, I also encountered such a riddle, reviewed hundreds of sites, and their main problem is that they focus on one thing. Someone writes that the matter is in the power supply unit, others insist on cleaning the computer. Yes, indeed, because of this, the PC may turn off, but there are still a lot of reasons that I will write everything in this entry, and you can independently diagnose it at home.

The article is long, I recommend using the "navigation" block. You never know, if you have already checked some method, so as not to read it again.

Dust, capacitors, thermal grease

I decided to combine 3 problems in one place, for the reason that in any case it is necessary to disassemble the system unit, why not do everything at once. In addition, if this is not the case, it will never be superfluous to clean the PC, check the capacitors and change the thermal paste. I generally recommend doing this 2 times a year.

Turns off due to dust

The first time I encountered such a problem was many years ago. This was my first computer, I played on it and nothing more. After 2 years, the PC began to turn off for no reason, you turn it on, it works a little and turns off. I took it to the service center, they laughed, cleaned it, and said that the computer is the second vacuum cleaner in the house. Since then, I have not started this moment, and I have not encountered such a problem again.

How to clean your computer from dust

I do it as follows: I open the lid of the system unit, take it to the balcony, put the vacuum cleaner to blow out. So we blow for a couple of minutes and everything will be like from a store. Here's another good video I saw on YouTube, I recommend watching it:

Apply thermal paste

Personally, in my experience it was such that the computer turned off due to a large layer of thermal paste, so you need to apply it correctly. I recommend buying a disposable tube / sachet, squeezing out quite a bit of watery liquid from it, until a normal paste is used (it resembles a toothpaste in consistency). Then drip directly onto the center of the processor and rub. It is best not to do this with your bare hands, but to wrap the disposable bag around your finger.

Perhaps it will be better and easier if I show you in the video how to apply thermal paste correctly:

Checking capacitors

Take this very seriously, because due to faulty and swollen capacitors, your motherboard and its components can burn out. To check and find swollen capacitors, disassemble the computer and carefully inspect all capacitors (they look like a barrel), an example of a bad capacitor:

Also, in addition to the motherboard, it is necessary to check the capacitors in the power supply. Take it apart and inspect it very carefully.

If you find swollen capacitors, replace them or take them to the SC, let new ones be soldered to you.

Shuts down due to overheating

Your computer shuts down automatically when it reaches a critical temperature (70-80 degrees). This is necessary so that the motherboard does not burn out. Despite the fact that this is an emergency shutdown, if you constantly turn on the computer again, over and over again, then your components may burn out. Personally, my video card burned out like that.

How to check the CPU temperature

You can find out the processor temperature in 2 ways: 1 - in the BIOS, 2 - using a special program. First, let's figure out when your computer turns off: under load (in games and when watching videos) or even without load? If, under load, we will test with the help of programs, even if at idle, then you can look at it in the BIOS.

Find out the temperature in the BIOS

First you need to get into it. Restart your PC and press "Delete" or "F1" depending on your motherboard. Now you need to find the "Hardware Monitor" tab

Where "CPU Temperature" is the temperature of your processor and should not go up to 70 degrees Celsius. Leave this tab for a while and do not touch the computer. If within 10-15 minutes the temperature rises more than 60 degrees, then your processor is not working properly.

It is quite possible that you have problems with cooling, change the thermal paste and look at the CPU fan while the computer is on (it should be spinning).

Also, in the screenshot above, pay attention to line 3, where "CPU Fan Speed" is the rotational speed of your cooler. It should be at least 1000, and preferably 2000 for proper cooling.

Temperature monitoring software

If the computer turns off from overheating only in games (under load), then testing in BIOS is not suitable for us.

Download the free CPUID HWMonitor program from the official website

Install and run the utility. Now you can check the temperature:

Minimize the program and start the game. After you turn off your computer, let it cool down and turn it on. In the folder with the program, you will have a text file in which there will be a report - open it and look at what temperature the computer turned off.

You can treat it with a new cooling system, additional coolers, and be sure to remember to change the thermal paste. This applies not only to the processor, but also to the video card.

Power problem

Have you noticed any power outages? The computer runs smoothly in the 200-240 volt range. If more or less protection is triggered and the computer shuts down. 1, 2, 3, 5 times is normal, and then the PB of the computer fails.

Also, it is worth trying to plug the computer into a different outlet, I personally have had this. Also, disassemble the computer and check if the wires and cables are tightly connected.

Shuts down due to new components

For example, you bought a new video card, very quickly ran home looking to test it, and then bam and the computer turned off. A couple of questions for you: how many watts is your power supply unit, before you upgrade, did you figure out how much power your power supply unit needs?

I recommend checking it out here -

Enter all your hardware, and it will show you how much you need to install the power supply. From my experience, I will say that 600 watts is quite enough today.

Errors in the OS

Quite a common problem is that the computer is shut down due to some kind of system error. Experts always look at the log files, after which everything becomes clear. Problems sometimes arise from drivers, so it is recommended that you update your drivers. Perhaps some file was deleted and a million more reasons, including viruses. If all of the above methods did not help determine the problem, it would be good if you reinstall Windows.

RAM problems

It happens when the RAM fails, this breakdown is typical - the computer freezes when copying, shutting down and starting programs. Determining whether the RAM is working properly is quite simple:

Windows 7-10 - open "Start" and paste - mdsched then press Enter. Next, click "restart your computer" and wait for the result (10-20 minutes).

After the check is completed, you have one of two things, or errors will appear or you will receive a notification "no errors were found".


You know, I end most of the entries with the phrase:

In such a non-tricky way, we saved money and did not take anything anywhere!

So, in this case, I myself have recently preferred to refer the computer to diagnostics. Experience shows that if the computer turns off by itself, this is not a mystery for a couple of hours and you have to tinker. It's good if something is banal, but there are cases when, for example, the train has dried up or a contact has broken off somewhere, played around with the power supply, etc. and this at first glance is not so easy to see.

I think it's better to leave a couple of dollars in the SC and spend time rationally. You will rest and people will have work).

We will cover issues such as overheating, defective capacitors, dusty chassis, short circuits, driver conflict, excessive power consumption, component failures, viral activity, task scheduler, and even parental controls. Make some tea and we'll start.

Disconnection reason classification

To localize a breakdown (and this is how a PC shutdown can be characterized), it is necessary to understand what could be the root cause of the problem. We will highlight 5 main categories:

  • hardware prerequisites (swollen capacitors on the motherboard, faulty components, short circuit, failure of the power supply);
  • user negligence (dust in the radiator of the cooling system and its overheating, operation of the processor and video card at critical temperatures, lack of cold air inside the system unit, rare PC maintenance);
  • software malfunctions (hardware driver conflict, critical software or OS error, viruses in the system, unsuccessful update);
  • external reasons (unstable power grid).
  • other (parental control, remote access, alarm clock, children).

Localization will save you a lot of time searching for errors. And we'll talk about the reasons for each.

Hardware reasons

Most often a computer shuts down due to swollen and "leaked" capacitors on the computer motherboard. The problem affects old-style MPs, since they have "barrels" with electrolyte installed on them. On the new models, in the overwhelming majority of cases, solid-state capacitors are used, which are more resistant to load drops. To localize the breakdown, it is necessary to remove the side cover of the system unit and carefully examine the board. Found a swollen capacitor? - Take your computer to a service center. Didn't find it? - Moving on.

Here are some illustrative examples of swollen, leaking, and burst capacitors.

The second good reason is system overheating ... The main components of a PC that are responsible for the health of the system as a whole: processor and video card. The first element is required for all basic calculations, the second for displaying graphical information. To cool them, a system consisting of a radiator and a fan is used, as well as a layer of plastic thermal interface (thermal paste) between the CO and the processor crystal. Overheating occurs for 3 reasons:

  • The radiator is heavily clogged with dust. The resulting "felt boot" impedes the normal air flow. Operating temperatures rise, components overheat and shut down to cool down somehow;
  • The fans have become unusable due to the same dust or wear of bearings / grease;
  • The thermal paste has dried out and lost its heat-conducting properties.

In simpler terms, regularly clean the system unit from dust and carefully monitor the "purge" of the case components. This will save the components from overheating and keep them working for a long time.

And here are some illustrative examples of PC pollution.

The next reason is short circuit ... Breakage options:

  • Negligence during assembly. You may not notice how you dropped the screw into the case, which fell between the pads. The supply of power produces a spark and a characteristic odor. If you feel it, immediately de-energize the system and diagnose the components visually. Blackening on the board and burned-out capacitors indicate serious hardware problems.
  • Water ingress into the housing by negligence. Or you are using a low-quality liquid cooling system (a breakthrough of the CBO hose with refrigerant leaking to the board). Condensation may also occur if the system unit is in a damp room. In any case, it is necessary to very carefully wipe all PC components and let them dry completely. Then turn the computer back on, but be prepared to promptly interrupt the power supply in the event of an emergency.
  • The motherboard, which is incorrectly screwed to the case, can also short-circuit. There should be space between the textolite and the box wall (for this purpose, special spacer bolts are used). If there is a suspicion of "breaking through" the case, unscrew the motherboard and screw it again, but using insulating washers made of electrical cardboard (sold in electronics stores). At the same time, check the case itself for dents and determine if the metal touches the contact pads of the motherboard. If not, everything is fine. In critical situations, the case will have to be replaced.

Consequences of poor build quality

The computer may turn off due to lack of system testing after assembly of components or after "hard" transportation of the computer by mail. Surely the key contact from the power supply has moved away, which no one noticed. As a result, the cable may fall off at the slightest jolt of the case. It is treated only by careful examination of the contacts and re-fastening of all cables inside the power supply.

The most striking example is poor fastening of the PC power button ... Well, or an alternative option - pressing it too hard, which is fraught with breakage of the key and its "sticking". Use the system carefully to avoid such situations.

Руки из копчика

Another nuance of a hardware nature - poor choice of power supply ... Let's say it is designed for the total power of the components not exceeding 300 watts. At the same time, the video card at its peak consumes 200 W, the processor - another 95 W, hard drives, fans, memory and other components - 100-120 W. As a result, the power supply unit operates at the power limit and regularly overheats. At best, it will fail and will require repair / replacement. At worst, you will lose your computer. To avoid this, we strongly recommend using a power supply with a power reserve and an aim for a further upgrade of the system.

Good PSUs also have protection against voltage surges, short circuits, line surges and overloads. Keep this in mind for the future.

The last reason is poor quality random access memory (RAM) whose memory chips are poorly soldered and cause a hardware conflict. As a result, characteristic clicks inside the case, a short low-frequency hum and "Blue Screen of Death (BSoD)" and the subsequent shutdown of the computer. There is only one way to determine a breakdown - to replace the memory stick or use yours in another PC.

Software bugs and conflicts

This type of error and malfunction should only be considered if a thorough scan of the PC yielded no results.

Malicious software

Let's start with "Viruses" , which often cause an emergency shutdown of the computer. Consider several classic options for the development of events:

  • Trojans replace system files;
  • Miner viruses load the processor and video card by 100%, as a result, the hardware overheats and turns off;
  • the file system of the hard disk is seriously damaged;
  • The virus enters the browser or other program, as a result of which a critical Windows error occurs when they are launched.

The treatment option is outrageously simple - install a high-quality antivirus, preferably a licensed one.

File system corruption

Viruses can indirectly cause violation of the integrity of the HDD file system ... This manifests itself in the inability of the operating system to read a specific file, or open it at the user's request (video, music, text files, pictures, etc.). In this case, physically data on the hard disk is present.

Data fragmentation

A second similar problem is severe data fragmentation on disk. When you try to start a game or program, the file system often crashes with a critical Windows error, and on the display you can see a blue screen of death and an error code like 0x0000000 (the exact description of the code can be found on the Internet). The problem is treated by defragmenting the HDD using built-in Windows capabilities or third-party software (Auslogics Disc Defrag, Formerly JKDefrag, Defaggler).

Attention: if the operating system is installed on an SSD, it is strictly forbidden to defragment data - this significantly reduces the working resource of the drive.

Operating system update

Another harbinger of shutdown is a critical Windows error. It appears either after an unsuccessful OS update (Microsoft "likes" to offer users unverified assemblies, which affects every third user), or after frequent formatting of hard disk partitions (you often removed and added new local disks or reinstalled the OS earlier).

Start button and voice assistant

The error can occur due to the opening of the Start command and the Cortana voice assistant. If the assistant is easily disabled or hides in the settings, then "Start" is more difficult to restore. First press Start , enter the command in the search bar CMD and run the "cmd.exe" file as administrator (right-click on the shortcut).

In the window that opens, enter the command Powershell ... After the line is displayed PS C: \\ WINDOWS \\ SYSTEM32 copy and paste below value:

Get-AppXPackage -AllUsers | Foreach Add-AppxPackage -DisableDevelopmentMode -Register “$ ($ \ _. InstallLocation) \\ AppXManifest.xml”

Then in the task manager ( CTRL +ALT +DEL ) open the "Processes" tab, find "explorer", select it and click the "restart" button. Sudden outages should stop.

Conflicting software and drivers

If you have been working with a PC for several years, then you have probably encountered problems with incompatibility of drivers for hardware. Often, software causes PC malfunctions up to its forced shutdown with an error code.

Of the main reasons, it is worth noting:

  • replacing an nVidia video card with an AMD analog without first removing the nVidia drivers;
  • replacing RAM or installing strips from different kits;
  • replacement of a printer / scanner / plotter or sound card with an analogue of another manufacturer;
  • an attempt to install a driver without a digital signature (Windows always warns about this);
  • uninstalling the required driver manually by simply deleting files in the folder (residual files and components will still remain inside the operating system and will interfere with the normal operation of the PC);
  • outdated drivers that are not supported by the current Windows operating system;
  • driver for another operating system (there are unique ones who manage to install them).

In all cases, the treatment is the same: remember the error code before turning off the PC and carefully read the accompanying note about the problem device, reboot in safe mode, remove the problematic / unnecessary driver and install the necessary one.

To go to safe mode , immediately after turning on the PC, press the key F8 until the OS boot options appear on the screen, including the required one.

By the way, if you have installed hardware from different manufacturers and different chip makers (AMD and nVidia video cards, Creative and ASUS sound cards, video capture cards, etc.), an error may also occur when you turn on the system. For a detailed description of the incompatibility problem, go to the profile forum or ask us a question in the comments.

Analogs of programs

A little more about software ... The case is extremely rare, but possible. Suppose you have 3-5 identical complex text editing programs installed (MS Office, OpenOffice, LibreOffice). We will not go deep, why so much, just explain the fact: system files can begin to conflict with each other, because of which you risk losing access to all three programs and losing the necessary text files.


It is worth mentioning separately antivirus software ... Ever wondered why all forums recommend using ONE antivirus and ONE firewall? Both of these clients integrate into the OS file system, replacing files for faster and better performance. Now imagine that NOD32 and Kaspersky are fighting for several identical system libraries from the System32 folder. As a result, the protection is lame, and the system files disappear, and the computer may shut down and no longer show signs of life. It will be saved only by reinstalling Windows.

Rare, but no less significant causes

We will include only 3 cases in the list of implicit problems:

  • installation of parental control from the side;
  • using a scheduler that automatically shuts down the PC;
  • too curious user.

In the first case, we have a simple situation: the parents restricted the child's access so that the latter would sit for the allotted amount of time playing games and on the Internet, after which he would go about his business. Parental controls can be installed locally (special software on the child's computer) or remotely (using home network tools). So if your dad is an administrator or a programmer, and you are 8-12 years old, don't look for a reason and get up and start doing your homework.

The scheduler is built into most modern programs (download managers, antiviruses, music players, etc.). If you wish, you can check the box "turn off the PC" after completing a certain action (the movie has been downloaded or finished playing, the computer has been successfully checked for viruses, the disc has been successfully burned, etc.). Many people often forget to uncheck the "turn off the PC after completion of the action" checkbox and are surprised at the sudden stop of work. Be careful.

The three reasons are closed by their own negligence and ignorance of the operating system. If you are cleaning your computer from unnecessary files and accidentally stumbled upon a folder with a capacity of 5-10 GB, which you do not know anything about, do not delete it. Especially if it is located on the C drive, Especially in the Programm Files folder, ESPECIALLY in the Windows folder. Only delete personal data that you yourself have uploaded to the HDD.

Let's summarize

Surely there are more sophisticated reasons for the sudden and systematic shutdown of the PC, but they manifest themselves extremely rarely. In 99% of cases, you will come across the prerequisites that are described in the article. To reduce the risk of an emergency termination of your Windows session, we recommend that you do the following on a regular basis:

  • Systematically clean the system unit from dust, wool and hair (at least 2 times a year). Also, do not smoke near the PC and install it in places with poor air circulation;
  • Change the thermal grease at least once every 2 years and service the cooling system once a year;
  • Tighten all the fastening screws inside the system unit, tighten the missing ones and check the quality of the cables;
  • Look carefully to see if the metal parts of the motherboard are touching the sides of the case. Isolate this PC component to prevent breakdown and short circuits;
  • Update your operating system regularly using official Windows tools;
  • Remove hardware drivers that you no longer use or plan to use;
  • Do not use duplicate software if it somehow affects the performance of the operating system;
  • Don't forget to uncheck the checkboxes in the planner.

We also want to recommend to create control points for the restoration of the OS in case of such sudden shutdowns. You never know what kind of problem will give another case. And at least the files will survive.

From time to time, PC users may encounter the problem of self-disconnecting the machine. This can happen on an arbitrary moment, to be associated with the launch of any program or the game. There are several reasons for this. In the article Bloga We are talking about why the computer turns off spontaneously and how to fix it.

Table of contents:

  1. Overload and overheating
  2. Power supply does not cope
  3. He dies hard disk
  4. Burning Dust Motherboard
  5. Shalyat viruses

Overload and overheating

Spontaneous disconnection of the PC can occur while working at a certain program or (more often) games. This is due to the fact that the components of the machine lack power. For health processor, all sorts of sensors are followed. They check its temperature, the speed of rotation of the fans, supply voltage to components and other indicators. If somewhere "shook" the temperature or the voltage jump occurred, then the OS will turn off the PC.

To avoid this, you need:

  1. Estimate the temperature of the processor by means of special utilities (Speccy, Speedfan, AIDA64 and others).
  2. Check whether fans work regularly, clean them from dust.
  3. Check the coolers, replace the thermal colon.
  4. In the hot season, use the cooling stand for laptops.
  5. Estimate system requirements for the game or program during which it turns off. Probably need to replace the equipment to a more powerful or refusal of this game.

Power supply does not cope

If during the PC work, it was disconnected regardless of what the user is busy, the power supply will be sold.

That happens:

  1. With old blocks who are over five years old.
  2. In cases where the components of the computer changed to more powerful.
  3. With frequent voltage jumps, installation of uninterruptible (UPS) will help.
  4. If dust gathered in the power supply.

Power interruptions are not always associated with the work of the block. For example, it may be a weak extension. Often users themselves hide the cables that fly out of their ports.

He dies hard disk

If the computer itself turns off or unexpectedly begins to reboot, and at that moment the metal grinding can be heard from the system unit or unusually loud buzzing, most likely the reason for the hard disk malfunction.

More precisely, it works out of the last strength and will soon "die". The first thing to make the user is to copy important data from the PC to the removable medium in order not to lose them. And then take care of the replacement of HDD.

Burning Dust Motherboard

The problem may arise due to the strong dusting of the motherboard and its slots.

Help prevention. Clean the components of the PC from dust should be at least every few months.

Shalyat viruses

One of the least possible reasons (but it all happens!) - This is viral activity. If the machine always turns off when the user is running on the Internet, most likely, a certain virus seams in the system. It can provoke shutdown and other times, for example, when starting a specific program, usually easy (text editor and other). In such cases, first of all it is worth checking and cured by antivirus system.

The computer turns off increasingly and more often, while the cables are stuck hard, the power supply and hard drive bought recently, all components will be brightly clean and there is no dust, and there are reliable protection from viruses. Only one option remains - to attribute the system block of computer affairs to the master (or cause it to the house) on a thorough diagnosis.

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