Often, diagnosing computer malfunctions consists in finding answers to one seemingly simple question - why does the computer turn itself off? This problem is widespread among modern PCs.
In our article, we will consider the most typical cases of spontaneous shutdown of a PC and try to describe a methodology for solving each individual problem.
The computer turns off by itself during the game
Often, users immediately start looking for the source of the problem in the video card, but note that a malfunction of the video card should be considered as a likely reason for shutdown only after checking 2 other computer components. Usually, when the video card is to blame, the symptoms look different, and the computer does not turn off itself, but simply either freezes or artifacts appear on its monitor.
The symptoms described above do not only apply to computer games. Any running "heavy" application or volumetric video causes a strong increase in the load on both the processor and the power supply.
The computer turns on and turns off immediately
Things can get a little more complicated here. Together with the reasons described above, malfunctions of other computer components can manifest themselves in this way. So, if when you turn on your computer immediately turns off, the first thing you should pay attention to the RAM or motherboard. Here it is recommended to carry out diagnostics from simple to complex, and it is worth starting with RAM.
PC shuts down for other reasons
In addition to the above reasons, there are many other problems that can lead to spontaneous shutdown of the PC. And if you do not have sufficient experience and skills in testing computer equipment, then it is better not to take risks and call a specialist, or use the help of friends who are more competent in such matters.Here are a number of probable reasons that can lead to a computer shutdown on its own:
- dust accumulated in the system unit;
- faulty extension cord, uninterruptible power supply or wiring;
- voltage drops or undervoltage in the mains.
Ways to check a spontaneously shutdown computer for faults
So, now having a certain list of "suspicions", let's go in more detail to check each of the probable reasons for the spontaneous shutdown of the PC. Of course, you can check what exactly failed by simply replacing the component that fell the most suspicion. But to begin with, we still recommend cleaning the computer system unit of dust, which can accumulate there a lot.
In order to exclude the processor from the list of suspicions, you will need to replace the thermal paste and check it using testing programs. For example, it is better to check the processor temperature through the BIOS,.
The RAM for faults can be checked in the program. If critical errors are found as a result of the check, then most likely there is a malfunction.
The easiest way to diagnose a power supply is with a multimeter, but only a trained person should carry out this procedure. Never get into live equipment without the proper skills!
It is usually easy to check the motherboard - all defective capacitors look a little swollen. If the problem is in microcracks, then it will not work just as easily. Then you can either try to vacuum the board with high quality, or throw it away with a clear conscience and buy a new one.
Thus, by checking or replacing each "suspicious" component one by one, we are most likely to come to a solution to the problem of spontaneous shutdown of the computer. This method, on the one hand, is highly effective, but on the other hand, it is not available to everyone, due to the lack of appropriate skills. However, we hope that the tips provided here will be helpful and will help you solve your problem.
It happens that when using a personal computer, it turns off spontaneously. Oddly enough, this is one of the most common problems, and also extremely unpleasant. There are several reasons. Let's consider several reasons, ways to solve them, and methods to prevent this problem in the future.
Causes and solutions to the problem
Power supply problem. If the computer shuts down on its own while playing a game, there are two possible reasons related to the power supply.
- The first is the lack of power supplied to the video card at the moments of peak load.
- The second is the deterioration of the power supply, it is outliving its resources, for this reason the computer may not turn on at all.
This problem can be solved by replacing the power supply.
Another reason why the computer turns off during a game can be overheating of the processor, caused by several reasons.
The first is the dust that settles on the hardware components of the computer.
Second malfunction or complete failure of the cooling system. This problem can be solved by cleaning the system unit from dust and replacing the faulty parts of the cooling system, if any. To prevent this, it is necessary to regularly, once every six months, clean the system unit from dust, and apply thermal paste to the processor.
If an easily bending case was used to assemble the computer, for example, made of galvanized steel, then vibration, or external physical interaction, the contacts between the parts may be broken.
However, you should not check the integrity of all contacts yourself, without the skills available for that.
Why does my computer turn on and off immediately
Immediately, we note that in this situation, everything is much more serious. This problem is not much different from the previous one. However, the reasons may be completely different things. Let's dwell on each of them in more detail.
If before the appearance of such a problem, "brakes" and freezes of the system, a long reboot were noticed, then perhaps the fault is a malfunction of the RAM. To determine whether the RAM is "guilty", it is worth changing the RAM strips in places. Check separately one stick of RAM in each slot. If after these steps, the computer turns off immediately after turning on, the RAM is in order. For prevention, it is only necessary to clean the system unit from dust.
Problems in the motherboard
If the problems in the operation of the RAM have not been confirmed, then you should take a closer look at the motherboard. Let's consider 3 possible reasons causing the motherboard to malfunction:
As sad as it sounds, the motherboard will end. With such a verdict, repairs are inexpedient for economic reasons. Connectors in different motherboards are guided by a narrow range of possible components, then the owners of outdated computers are a reason to change the computer.
If parts of the computer have not yet lost their popularity, you can replace them.
If it is possible to prove the presence of a factory defect, then everything will be replaced. The reason for the appearance of microcracks is improper use, then only buying a new motherboard will help.
- breakage of capacitors on the motherboard;
This problem can be solved by replacing defective capacitors, it is better to entrust it to professionals.
Does not turn off after completion of work - reasons
In some cases, users are faced with the fact that the computer continues to work after shutdown. Let's consider two main reasons for this problem.
If the fears about the virus have not been confirmed, you should look for a program that prevents the computer from shutting down.
Let's look at windows 7 as an example; in general, the common path must match.
- Let's open the shortcut "My Computer".
- At the top there is a panel with the "Open Control Panel" button.
- From the list that opens, select "Support Center".
- Expand the Maintenance tab.
- Click on the link "Show stability log".
In the presented monitoring, select the date with the submitted error report. The report will indicate the program that prevents the computer from completely shutting down. After finding this program, you should turn it off, you will need to perform a couple of simple steps.
- In the Start menu, find the Run button.
- In the field that opens, enter "msconfig" and press the "Enter" button.
- In the window that opens, select the "General" tab.
- Then you need to check the box next to "Selective startup" then "Load system services".
- After that, you need to visit the "Services" tab and from the list provided, find and forcibly terminate the program presented in the report.
However, without resorting to searching, you can check the box next to "Do not display Microsoft services" and then click on the "Disable all" button. After these steps, you must restart your computer. This option will terminate all third-party programs.
Why does Windows 7 computer shut down for a long time?
Since windows 7 is one of the most popular operating systems, we will talk about one specific reason inherent in this version of windows. There are several reasons for a long shutdown of a computer running this OS version. Let's consider each.
Extra background processes
Windows 7 is distinguished by a large number of unnecessary background processes (about 140, for example, there are about 25 in windows XP) that start together with the system. When shutting down, the system needs to save the data collected by this or that process, and this takes time. To fix this problem, you need to disable unnecessary background processes.
Software conflict
For this reason, the computer can turn off for a long time under other versions of windows. For windows 7, this problem is most typical, since the program does not respond, then when shutting down, the system has no right to abnormally terminate the program. In such cases, it is sometimes worthwhile to resort to disconnecting the computer from the network. To prevent this from happening, you need to independently close all active programs.
Drivers
No other system like windows 7 has such frequent driver problems. This version often stores drivers with errors, then reinstallation may not bring results.
Incorrectly installed drivers can decrease performance, which will affect shutdown times.
To remove incorrectly installed drivers, you can use the DriveCleanup program and then reinstall the drivers. If the operating system, in this case windows 7, has not been completely changed on the computer for more than one year, it is not recommended to update any drivers.
This article provides the main reasons and solutions for such problems as: spontaneous shutdown and startup of the computer, long shutdown of the computer running the windows 7 operating system.
Updated: 17.12.12
The computer turns off by itself - reasons
So your the computer began to shut down on its own Firstly the computer shuts down during the game, when watching videos and on the Internet.
The cause of the above symptoms when the computer works and suddenly shuts down by itself, first of all, there may be overheating of the central processor. The fact is that all modern motherboards have protection against processor overheating. Upon reaching a certain maximum temperature, the computer just turns itself off.
Dust causes most components to overheat.
Dust clogs up between the radiator fins and prevents the fan from blowing air through them. Accordingly, the heatsink is practically not cooled and the processor too.
Indirect confirmation that the cause is overheating of the processor is that the computer shuts down by itself under heavy CPU load.
More often the computer turns off during the game, because modern computer games are demanding on computer resources and heavily load the processor and video card. Also, the computer can turn off when watching a video or when actively browsing the Internet.
If the computer shuts down due to overheating of the processor, then when you turn it back on, it may not turn on at all or turn off when Windows boots. This is due to the fact that the processor has heated up to the maximum allowable temperature and has not yet had time to cool down.
So, the answer to the question " Why does the computer turn itself off"In most cases it is simple. This is processor overheating caused by dust. In some cases, the processor overheating can be caused by mechanical damage to the cooler fasteners or improper installation of the cooler, as a result of which it does not adhere tightly to the processor surface and does not cool it properly. More about this problem.
Less common reasons self-shutdown of the computer during work are malfunctions of the motherboard or power supply.
Computer shuts down spontaneously - diagnostics
If the computer shuts down spontaneously, first of all, you need to check the temperature of the central processor. There are several ways to do this.
The easiest is to see the temperature of the processor in the BIOS. But not all BIOS versions support this feature, especially on laptops.
Depending on the BIOS version, this may be PC Health Status or Hardware Monitor.
Parameter CPU Temperature and shows the temperature of the central processor.
The processor temperature of a newly turned on computer should not exceed 70 degrees.
However, it is much more accurate to determine whether the processor is overheating or not using the program Everest or Aida64 ... You can download it.
In the left window open the tab A computer and select item Sensor... Check the CPU temperature in the right window. If it is more than 70 degrees, then overheating is likely. For an accurate determination, it is necessary to load the processor and track the temperature rise.
Open the tab Test in the left window and select the test FPU Julia... Press the button to start the test. Refresh on the top toolbar. Run the test several times. Monitor the processor temperature after each time. If the temperature rises sharply to 85-100 degrees and drops very slowly, the reason that the computer shuts down by itself overheating of the processor.
Self-shutdown of the computer during work - what to do if the computer turns off by itself
The computer turns itself off what to do?
If the processor overheats, you need to open the case and carefully vacuum it so as not to catch anything. Then you need to remove the processor cooler and clean it from dust. The fan must be removed in order to better clean the radiator from dust.
The heatsink and processor must be cleaned of residual thermal paste. Thin layer Apply new thermal grease to the processor and reinstall the cooler.
After you assemble the computer, run the tests in Everest again and make sure that the temperature is normal. During the tests, it should increase, but at the end it quickly drops to 55-65 degrees or below.
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 ran into 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 post, and you can independently diagnose it at home.
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 the following: I open the lid of the system unit, take it out 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 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 may 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. Disassemble it and examine 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 turns off 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 CPU temperature
You can find out the processor temperature in 2 ways: 1 - in 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 also look in the BIOS.
Find out the temperature in 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 tab "Hardware Monitor"
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 over 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 rotate).
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 because of overheating only in games (under load), then testing in BIOS is not suitable for us.
Download free CPUID HWMonitor program from the official website https://www.cpuid.com/softwares/hwmonitor-pro.html
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 do not forget 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.
Turns off due to new components
For example, you bought a new video card, very quickly ran home eagerly to test it, and then bang and the computer turned off. A couple of questions for you: how many watts is your power supply, before you upgrade, did you figure out how much power your power supply needs?
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 enough today.
Errors in the OS
Quite a common problem is that the computer is shut down due to some kind of system error. Specialists always look at the log files, after which everything becomes clear. Problems sometimes arise due to drivers, therefore it is recommended. 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.
RAM problems
It happens when the RAM fails, this breakdown is typical - the computer freezes when copying, shutting down and starting programs. Determining if 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".
Conclusion
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 shuts down by itself, this is not a mystery for a couple of hours and you have to tinker. It's good if something is trivial, but there are cases when, for example, the train has dried up or a contact has broken off somewhere, played around with a 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).
Hello friends. What if my computer shuts down by itself? A PC or laptop should not shut down arbitrarily for no reason. And if such a problem occurs, it is obvious that something is wrong. Either the software part of the device or the hardware may be out of order. Below we will consider the common reasons that can cause unauthorized shutdown of computer devices. At the end of the article I will tell you two very interesting cases on this topic.
Let's start with the reasons at the Windows level.
1. Task Scheduler
Be sure to check the Task Scheduler Library first.
and remove tasks that may be associated with the computer shutdown. IN carefully review all the scheduler tasks.For example, in addition to the usual task that turns off the PC, a bat-file launched by the scheduler and so on can do this.
2. Drivers
Windows is a universal operating system for a huge number of computer components. Their support is realized due to drivers, which can malfunction due to various mistakes made by programmers when writing them, problems within Windows itself, or a driver conflict. Most often, such problems manifest themselves in the form of a blue screen of death (BSOD), but sometimes they can manifest themselves in the form of an arbitrary shutdown of the computer without crashing into a BSOD. Knowing or at least assuming which device driver is the instigator of the problem, you can try. If the driver is installed from an EXE installer, it is preferable to get one. Without knowing the specific causal driver, you can try to reset the hardware binding using the standard Windows Sysprep utility.
3. Viruses
Viruses can cause an arbitrary shutdown of the computer - both their direct participation and the consequences they cause in the form of destruction of important system files. Here you need to destroy viruses and conduct (you can even do this). As a last resort, reinstall Windows.
4. Third party programs
If the computer shuts down by itself, it might be due to third-party software running. The likelihood that one program conflicts with another, and this leads to this result, is very small. Usually, programs just crash, and serious types of hypervisors fall out in BSOD. But you can also come across the following picture: mistakenly configured or forgotten schedulers inside programs such as media players or various organizers, while working in the background, shut down the PC (the same Download Master can do this).
Naturally, assuming that in this way they follow the user's direction.
Testing the computer device in the mode will help to identify the third-party programs causing the problem. By the way, the task of shutting down the computer at a certain time or under certain circumstances can also hang out in the standard Windows scheduler (this is written at the beginning of the article).
- Note: whether the reason for the arbitrary shutdown of the computer is software, not hardware, you can identify by testing its operation as part of launching from any assembly of the Live disk for system specialists. One of the best WinPE-based Live disks is the AdminPE and.
What hardware reasons can cause the computer to turn off by itself?
5. Strong loads on a weak computer
If resource-intensive tasks such as modern games or programs for working with 3D are launched on a weak PC or laptop, the device may not withstand the load and either freeze for a long time, or fall into a BSOD, or arbitrarily go into a reboot or shutdown. And this is regardless of the overheating of the video card or processor, although, naturally, both factors can take place.
6. Overheating of components
One of the most common reasons why a computer turns off by itself is overheating of the processor, video card or hard drive. The protection of these components is triggered. Again, the clinical manifestations can be different - with or without BSOD loss. All components are required under load. If it reaches a critical threshold, it is necessary to eliminate the cause of overheating:
Check if the PC case is sufficiently ventilated;
Clean the computer from dust, replace the thermal paste on the processor;
Add the number of revolutions of the cooler, replace it or strengthen the cooling system;
Replace the hard drive (often overheating HDDs are not repaired due to the inappropriateness of the repair, since a used hard drive in good condition is cheaper than the services of a service center for restoring a warming one).
- Note: some laptops, for example, some HP models, are initially susceptible to HDD overheating due to poor design of the device itself. For such laptops you can pick up.
7. Power supply
Another fairly common reason why the computer turns off by itself is a problem with the power supply. It can be either faulty or overly weak to support powerful user tasks such as running resource-intensive games. Whether the power supply unit is faulty can only be determined by a qualified specialist.
8. Power surges
A computer is more sensitive to power surges than consumer electronics, which, alas, is often found in settlements remote from cities. And power surges can lead to unauthorized shutdown of computers, while other equipment in the house can continue to work. In such cases, take care of a surge protector or uninterruptible power supply (UPS).
9. Incorrect overclocking
10. Other
Other reasons for an arbitrary computer shutdown may include:
Swollen or leaking capacitors, cracked motherboard soldering;
The heating chipset of the motherboard (shutdown can occur right at the stage of starting the computer).
Without appropriate specialized knowledge, such issues, of course, need to be resolved with the involvement of a service center specialist.
Promised stories
They brought us a computer to the service center, which turned off by itself (according to the client, it was always late at night). In search of a solution to the problem, we disassembled all Windows by cogs and did not find anything criminal, except for five malicious programs, which they removed, after which, just in case, we restored the integrity of the system files. It was getting late and we were getting ready to go home, deciding to leave the computer on. The system engineer plowed for more than a day and we happily gave it to the client. The next day the man came back and said that the computer had turned off last night. My partner decided not to suffer anymore and reinstall Windows, but I was against it. Determined to firmly find the reason and write the article, I took the computer home. My PC didn't turn off for three whole days! And then a wonderful thought occurred to me. I called the client and asked what he usually does in the evening at the computer and he replied: "Nothing special, I watch movies!" It turned out that our victim uses only two programs: a browser and a KMPlayer player, in the settings of which I found what I was looking for.
The second incident is also interesting, but I will not describe it completely, I will tell you the very essence. The client brought a PC that turned off at his house several times during the day, and it worked fine for us for a week. In the end, it turned out to be a faulty electrical power cable for the computer, which he did not bring with him. I made this assumption and asked the client to bring the cable. When the cable was dialed for an open circuit with a multimeter, my assumption was confirmed and it remains only to replace it with a new one!
