There is often a situation when an ordinary user, after a long period of normal operation, suddenly begins to turn off his or her computer. Quite often the reason for this can be easily eliminated on your own. Let's try to figure out why this is happening and how to fix the problems that have arisen.
Reasons for PC shutdown and their solutions
A computer can turn off due to many different reasons, including both software and hardware. In general, you can roughly determine what the reason is by behavior.
So, if the operating system does not have time to start loading, then there is a high probability of hardware problems.
Otherwise, there may be problems of any nature, including software ones, most often due to various types of malware. However, first of all, you need to find out why this happens.
Malware
There are a great many different types of programs that create many troubles for users, and spread independently. There are also those that turn off the PC after loading.
Let's figure out what to do to either eliminate this option or eliminate the problem.
First of all, you need to create a bootable disk or flash drive with antivirus software. On the websites of antivirus software manufacturers, these types of images are offered free of charge, with complete instructions for creating bootable disks. Although this will require a “healthy” computer with Internet access.
Having created such a drive, you should:
Note. A complete scan can take a long time, up to several days, depending on the amount and nature of the recorded information, as well as on the overall performance of the system.
If, after checking, the system similarly turns off during operation, or does not have time to boot at all, then the problem is clearly of a hardware nature.
Low power or faulty power supply
First of all, you need to check the AC voltage. Either a “familiar electrician” or a universal device – a multimeter – can help with this.
Ideally, the network voltage should be 220 Volts, but deviations of 10% are allowed. Those. at 240 or 200 V the power supply should work fine.
If the voltage deviates beyond acceptable limits, it is necessary to either solve the problem by contacting electricians, or install a voltage stabilizer, of which there are a sufficient number on sale.
- In the power supply itself, if the problem is not in the outlet, there may be malfunctions of the following nature (when the computer periodically turns off):
- emergency shutdown as a result of overheating - the cooling fan may have failed, or the inside of the power supply has become very dirty;
- physical degradation of circuit components (usually capacitors) - usually after “warming up” it begins to work normally;
- excessive load on the components of the system unit - emergency shutdown as a result of overload;
an emergency signal from the motherboard - a malfunction of the built-in converters or others (although this is no longer the power supply itself).
What needs to be done to correct the situation:
By and large, if cleaning the dust solved the problem, then good. In other cases (except for the option when the system does not work with a known-good power supply), it is best to replace the secondary power source. But in the case of system inoperability with a known good power supply, the problem lies in other components.
Overheating of the processor or video card
After long-term use, or if some components are initially defective, it is possible that the computer turns off due to overheating of important components. For example, the cooling radiators of a central or graphics processor may become overgrown with dust and stop performing their functions.
If the computer turns off by itself after 5 minutes of operation, then first of all it is necessary to check the cooling system.
The nature of the PC’s behavior will tell you what to initially pay attention to:
First of all, you need to make sure that the cooling systems are securely fixed in place, and the fans on them (if any) rotate without extraneous sounds or forces.
When the fan makes a lot of noise or is difficult to rotate, it should be replaced.
Prevention of CO is carried out as follows (quite simply):
However, there may be cases when prevention does not help (or the computer is completely new). In this case, it is possible that the cooling system simply cannot cope with the task, because it lacks performance. This could be either an incorrect calculation during production or a loss of efficiency due to wear and tear.
Therefore, a more subtle approach is needed, which is also useful in case of one-time problems that have not yet “escalated” into a serious problem. In addition, such control will help prevent problems from arising.
Video: Computer shuts down
The temperature is too high, we find out the values in AIDA
All major PC systems are equipped with built-in monitoring and self-diagnosis components. Likewise, the central processor, video card and chipset are equipped with temperature sensors. Their readings can be seen in the BIOS, or you can use special programs in the OS environment.
One of the most common programs of this kind (and also has many other useful functions) is AIDA.
That's why we'll use it. It does not require installation - just download it and you can start it right away. The program must be downloaded in the appropriate version. If you have a 64-bit version of the OS (nowadays the majority of them do), then the program also needs AIDA64. The launch itself is carried out by double-clicking on the program’s executive file (aida64.exe or aida.exe, respectively for the 64-bit and 32-bit versions). After launch, on the left side of the program window (titled “Menu”) you need to select the “Sensors” item, after which the readings of all temperature sensors available in the system will be displayed on the right. It is useful to check the temperature readings when running resource-intensive applications, because... under load they increase.
The temperature should (ideally) not exceed 70 degrees Celsius.
Listed above are only the main, most common problems. However, everything can be much simpler. For example, the power button on the system unit can easily become stuck. With a little experience, you can easily determine such a defect by touch, but it is not possible to exclude this option using more accurate methods.
For example, you can simply disconnect it from the motherboard by starting the PC manually by closing the corresponding contacts. If the computer stops turning off, then the reason has been determined. All that remains is to eliminate the defect.
In many cases it is necessary to start checking from this position. But if the reason is not in the button, then proceed to checking other possible options described above.
It turns off after a while, what should I do...
Let’s look at what algorithm to use to determine a malfunction of this kind:
In order to carry out all the operations described above, you must have at least minimal knowledge of the structure of a PC. If the problem cannot be resolved (which is unlikely), then you should contact a specialist. Although you can replace the entire PC, which is also a solution.
As a result, the main part of the problems arising with spontaneous shutdown was considered, according to statistical data.
In 99% of cases, problems have precisely these relatively simple causes. Eliminating them is also not difficult.
However, other types of malfunctions are also possible, with similar symptoms, for example, unstable operation of the current converter on the motherboard (this is also true for the video card). In this case, you can either replace the main component or contact a service center.
It turned out that they brought me a computer for repair, which turns off after a while. At the same time, a friend had the same problem with his brainchild.
Having wandered through the vast expanses, I found many forums with smart people and a lot of text with smart words. But there were no simple instructions. So for yourself and your favorite piece of hardware. Simple actions to revive the system unit.
I decided to shoot a herd of hares with one blow
Let me remind you that everything needs to be done very carefully. Step left, step right - and you are a father..
Brief instructions for reviving your computer
So. If your computer turns off after a while, as if it had been suddenly deprived of power:
Iron. Localization of the defect.. Computer turns off,
The computer restarts Or Computer won't turn on
. The actions are almost the same.
Part of your further actions is localization, part is prevention. One without the other makes no sense.
1. Cleaning your computer from dust.
Open the system unit and use a vacuum cleaner and a soft brush to clean the insides of dust. Pay special attention to the processor radiator and coolers.
This is roughly what a computer cooling system SHOULD look like. And you will see for yourself what it really looks like.
If the radiator fins are clogged to death not with dust but with felt, don’t expect normal computer operation. At the same time, pay attention to the cooler, whether everything is spinning. If necessary, either disassemble and lubricate, or replace, which is of course preferable.
2.Visual inspection.
Carefully inspect the motherboard for swollen capacitors and dark
(overheated) places. In particular, under field-effect transistors and microcircuits.
The presence of cracks, chips and other mechanical damage on the motherboard.
Sometimes it is useful when cleaning dust to turn the system unit over and shake it a couple of times. There are frequent cases of foreign objects getting on the motherboard. Boltov, etc.
Overheat.
3. Old thermal paste between the processor and the heatsink is one of the reasons for the processor to overheat and the computer to suddenly shut down.
It is washed off with a cotton swab moistened with alcohol, and a fresh one is applied. The paste is used to fill uneven surfaces of the processor and radiator, so you shouldn’t spread it a lot.
If the paste has dried out and there is no new one, then it’s better without it. Metal conducts heat better than a piece of chalk
By the way, I use the regular one KPT-8 white. The main thing is to find a quality one.
A crookedly installed radiator will give the same effect of overheating and shutting down, only the radiator will remain slightly warm when the processor underneath is hot.
If you have any doubts whether overheating is to blame, secure it to the chassis additional cooler, preferably a large one, and direct it to the area of suspected overheating. Usually this is a processor, chipset and video card.
You only need the cooler for a while, and you can secure it with either wire or glue from a gun.
And since there is nothing more permanent than temporary, it is still worth fastening carefully
4. One of the common reasons why the computer turns off or does not start is dirty contacts of memory sticks. Please note that many contacts on the computer are gold-plated for better contact, which means you should not handle them with bare hands. Oxide on one of the contacts or a piece of a seal sticker or any other debris will not add reliability to your system unit. All this is cleaned with a student's eraser and abrasive.
5. Measuring basic computer voltages.
Changing any of these voltages affects the operation of the computer as a whole.
With the cord completely unplugged, the voltage on the BIOS battery is measured.
There should be at least +3 volts.
Plug the plug into the outlet and measure the +5 volt standby voltage on the lilac wire of the large connector.
Press the power button and measure +5 and +12 volts on one of the small connectors.
The power supply is the basis of everything. A sag in one of the power supplies or poor filtering of the RF component can cause absolutely any glitch in the operation of your system.
If you feed a person all sorts of rubbish, then not only will he run poorly, but he will also begin to fall when walking
6. Even if all the voltages are normal, since you’ve climbed into the system unit, it wouldn’t hurt to look into power unit. Cleaning and inspection, everything is the same as on the motherboard. Check cooler. Search blown capacitors.
Sometimes, because of one small electrolyte, the power supply burns the motherboard. So don’t be lazy, you’re trying for yourself.
Ideally, you need to throw in a new one or known working power supply. This will save you a lot of time. In the absence of it, we perform the steps described above.
7. One of the reasons why your computer overheats and turns off is overclocking.. Recently I came across a motherboard on socket AM2, which, without overclocking, suddenly started working at an increased frequency. In such cases, it won't hurt to reset the BIOS.
This can be done with a jumper,
Can i remove the battery and close the contacts to which she was connected.
After this you will need to set at least the basic settings bios or just set everything to default.
8. Abrupt periodic shutdown may be due to hard drive or poor contact of the power connector.
In older units, coated brass, spring-loaded contacts were used inside the connectors. In modern inexpensive ones, apparently from Chinese tin cans. Temporary treatment by bending the contacts.
This is especially true for IDE disks, but also SATA The connectors are no better. The Chinese save on everything. Not only the power connector can fail, but also the IDE or SATA interface connector.
When choosing a SATA cable, preference should be given to a connector with a latch. Although this will not protect you from tiny wires inside, the contact will be more reliable.
8a. HDTune
It's a good idea to check the status of your hard drive using HDTune.
Download, unzip, run.
On the tab Benchmark check the bitrate. If it does not throw an error and there are no strong dips in the chart, move on to other tabs.
On the tab Health There should be no red marks. And on a working HDD in the Health Status column it says green OK
Then run the check on the tab Error Scan. Bad sectors will be red.
In case of any damage to the hard drive, it is impossible to predict the behavior of the computer. Therefore, you will need to start with repairing or replacing the HDD.
9. Short circuit in USB sockets. Sometimes these sockets become so wet that the contacts periodically short-circuit to the housing, thereby triggering the power supply protection. Look through and if you find a crime, eliminate it.
10. If, despite all the above steps, the computer continues to go out from time to time, you can try to pull the motherboard out of the case and start it on the table. Happened in some boxes sometimes happened
short circuit to body excessively long coil leads in the power supply circuits of the processor core.
11. If your computer does not turn off abruptly, but shuts down on its own, it’s possible the button is acting up on the system unit.
12. If the unit does not turn off on its own in the duty room, but crashes into blue window of death, then this will make finding the defect a little easier. But that's another conversation.
We went through the computer hardware, but it still continues to slow down? Not with iron alone...
Look at startup, clean temporary folders, remove unnecessary programs.
Methods for software revitalization of a computer described by me here:
That's all in a nutshell. If you didn't find a solution to your question here, don't worry. These are only general recommendations for eliminating the defect. Write to us and we will try to help you. At least give me a push in the right direction.
In this article we will look at the main reasons why a computer may turn off by itself. Have you been working on a program or playing a game, and then, out of the blue, your computer just turns off? And even if this is not the first time this happens, don’t be alarmed. Let's deal with the problem that has arisen.
Poor cooling of parts
The first reason why a computer may turn off spontaneously is poor cooling of parts. In order for them to work stably and not overheat too much during operation, active or passive cooling is installed for them.
Make sure that the system unit is not covered on all sides: by furniture, cabinet partitions, etc. It should stand where there is free access to air. Otherwise, it can often overheat, because the warm air simply has nowhere to go.
Next, remove the side cover of the system unit and turn on the computer. See if all the fans are in working order: for the video card, processor, on the case. If the fan on the case does not work, then for better cooling of the parts, you can simply leave the side cover of the system unit open. If the fan does not work for a particular element, then it is better to replace it with a new one.
Also, pay attention to the dust inside the system unit. If a considerable amount of it has accumulated there, then it is better to clean the parts. After all, dust interferes with the dissipation of heat when heating the elements, which causes them to overheat and cause the computer to spontaneously shut down.
With the system unit turned off and de-energized, turn all the fans with your finger. They should not spin with difficulty or make strange sounds. Otherwise, lubricate them with sewing machine oil.
Also look at the state of the thermal paste - it is a viscous substance and is also involved in the process of heat transfer. If it is already dry, it needs to be replaced.
To prevent your computer from shutting down due to overheating again in the future, install the program to monitor the processor temperature CrystalDiskInfo. In this case, the temperature will be displayed in the tray.
Voltage drops
The second reason why a computer can turn off on its own is voltage fluctuations in the network. Moreover, you may not even know about it. For example, you are working or playing at the computer, at this time, one of your relatives turned on the electric kettle in the kitchen, or the refrigerator started working. As a result, a power surge occurs and the computer shuts down safely.
If everything is exactly like this for you - the computer turns off if any other electrical appliance is connected to the network, then it would not be a bad idea to purchase and connect an uninterruptible power supply.
Swollen capacitors
The third reason is swollen capacitors. Open the system unit and look at all the capacitors installed there. Their top should be smooth. If the cap of the capacitor is swollen, or there are streaks on it, then it may cause the computer to turn off spontaneously.
In this case, you need to buy suitable capacitors and resolder them. If you are not strong in electronics, then it is better to find a knowledgeable person or take the system unit to a service center.
Weak power supply
The fourth reason is a weak power supply. If you run any game or program that requires large computational costs, then the computer may simply not have enough power from the power supply, as a result, it will turn off.
Problems with the video card
It is responsible for all graphics on the computer, that is, displaying images, videos, and games on the monitor. And if it fails, the computer may also turn off.
Very often, users are interested in the question: why does the computer turn off during the game. The reason may be a power supply that cannot withstand the load, or a video card that cannot handle graphics. Elements in the system unit may also overheat.
Failed hard drive
It is from the hard drive that the computer reads all the information necessary for work. If you hear a strange sound while working at your computer, then it is better to think about purchasing a new hard drive. Over time, bad sectors appear on the media, and when the read head hits them, the computer may turn off spontaneously.
To check your hard drive for bad sectors, you can use special programs, for example, Victoria.
Driver conflicts
The seventh problem is a conflict of installed drivers. Drivers connect the hardware and software of a computer. And if they are poorly compatible, this can lead to the computer shutting down. Try reinstalling the conflicting drivers: , and using special programs: , and others.
Viruses
And the last reason I want to describe is viruses. The fact is that they, like programs and games, can greatly overload the system, as a result, the computer will simply turn off. The simplest solution is to scan your computer using an antivirus program, then delete any infected files found. If it helps, then great, if not, move on.
Try doing a last known known configuration. To do this, restart your computer, and while the operating system is loading, press F8 frequently. In the window that appears, use the arrows to select the item "Load Last Known Good Configuration". If the problem does not go away, move on.
If you cannot use your computer for 5 minutes, then it turns off, we will try to remove viruses in safe mode. Press F8 again when rebooting, then select "Safe mode". If the computer boots and works normally, great. Run an antivirus program and remove all viruses found. The best option for this is the AVP Tool.
There are enough ways to help you. Follow the link and read a detailed article about this.
I hope now you can figure out the problem: why the computer turns off by itself. If you know any other reasons, or have any questions, write in the comments.
Rate this article:1. Why does the computer turn off by itself after a certain time?
2. Why does the computer turn off during the game?
3. Why does the computer turn off immediately after turning it on?
The main reasons for unauthorized computer shutdown
1. System overheating;
2. Viruses;
3. Conflict between installed drivers/programs.
Let's now look at all of the above in detail. I just want to draw your attention, dear readers, to the fact that I will describe all the reasons for the computer to turn off spontaneously in order from the most common to the rarest reasons. So…
Why does my computer turn off on its own?
1. System overheating. Most radio components, during operation, emit a certain amount of heat, i.e. are heating up. To ensure that they operate stably and do not heat up to a critical temperature during operation, cooling is installed on them - active (fans/coolers) or passive (radiators). If cooling works poorly or does not work at all, the computer begins to freeze or turn off spontaneously.
If this is the reason, then look at the computer while it is running from the inside and find out:
— are all the fans working, in particular: on the processor, video card, power supply, on the walls of the case. If any fans do not work, then they need to be replaced. The exception is the coolers on the case itself, because... you can simply leave the system unit open so that air ventilation is natural.
— whether there is a layer of dust on fans, radiators and other parts. After all, dust interferes with the dissipation of residual heat from parts, which also leads to constant freezing and unauthorized shutdown of the computer;
- Is your system unit located in some niche, closed on all sides except the front side? In this case, the hot air from the system unit has nowhere to go, which also leads to a constant elevated temperature and, accordingly, unstable operation of the computer.
If the computer is more than one year old, then the cause of system overheating may be dried thermal paste - a special viscous mixture that is applied between the heat dissipation element (processors, chipsets) and the cooling system (radiators) for better heat transfer.
Many people are interested in the question: “Why does my computer turn off while gaming?” The answer is simple: The fact is that computer games, like working in Photoshop, video processing and other similar operations cause a greater load on the system than working with documents. Thus, more resources are expended and, accordingly, more heat is generated. The solution to this problem is the points that I discussed above.
2. Computer viruses. Computer viruses cause the computer, as in the case of computer games, to increase the load on the system. Thus, they are also one of the key reasons why the computer turns off spontaneously.
3. Conflict between installed drivers. Drivers are firmware that makes computer components work or function correctly. There are cases that some components are incompatible or poorly compatible with each other, and as a result, sometimes cause a failure during the operation of the entire system. If the previous steps did not help, try reinstalling the drivers.
4. Unstable voltage in the electrical network. In large cities this situation is not so obvious, but in urban settlements or villages it is a different question. In my village, tension still constantly jumps when there is a strong wind. In any case, equipment does not like such manifestations, therefore, install a surge protector, or even better, if you additionally purchase an uninterruptible power supply (UPS).
I’ll also tell you the following situation on the topic of voltage: When I still lived with my parents, and didn’t particularly understand hardware, my computer constantly turned off without permission immediately after turning it on. No matter how many masters came, no one could help. A little later (a week later) I noticed that its turning off in some strange way coincided with the turning on of the refrigerator (Minsk) in the kitchen. When I moved the kitchen furniture to get to the refrigerator socket, I was simply amazed: the socket was almost incinerated, and when the refrigerator was turned on/off, there was a power surge throughout the entire electrical network of the apartment. And, of course, my computer “jumped” along with other electrical appliances.
5. Conflict in work between installed programs and computer components. Since computer programs are updated much faster than we buy hardware, it happens that a new program does not work entirely correctly on an outdated computer. For example: on this old PC I have hardware from 2006. When I launch the Mozilla Firefox browser after turning on the computer, my computer first freezes, and after 5 seconds it simply turns off by itself. To avoid this, I first turn on the PC, then restart it, and after restarting Firefox works fine.
6. Hard disk failure (HDD). Information in computers is recorded on a hard drive. If you hear a strange “metallic grinding noise” when you turn on or operate your PC, this indicates that it is gradually becoming unusable. As soon as the read head hits worn sectors of the hard drive, the computer may turn off spontaneously. There are programs that can be used to check the operation of your hard drive. If faults are identified, it is better to purchase a new drive and transfer all important information to it, and disconnect this one and remove it from the system unit.
7. Capacitors. Today, nothing is eternal, except life in the Lord, of course. If you have checked everything that I wrote about earlier, look carefully at the radio components in the system unit, in particular at the capacitors.
If they have lost their even cylindrical shape and look as if they are “swollen”, or there are traces of drips on them, then they may be the reason for the computer constantly turning off spontaneously.
8. Incorrectly configured or installed operating system (OS) and other programs. Sometimes it happens. You can’t give a specific recipe here, you need to look to a specialist.
9. Spontaneous shutdown of the laptop every 25, 30 or other times after turning it on. If the time matches exactly as I wrote, then this most likely indicates an incompatibility of the processor with the motherboard. This often happens after a laptop has been repaired by “craftsmen”.
10. Weak power supply. If the computer turns off spontaneously under load, for example in “heavy” computer games, then the cause may be a weak power supply, because The more programs load the system, the more power the system needs from the power supply. If there is not enough power, the computer turns off. Thanks to Evgeniy for the idea, from the comments to the article.
If I remember anything else, I will add to the article, but I will also be glad to listen to your experience, dear readers, about the reasons for the unauthorized shutdown of the computer.
Finally, I will say, be careful about who you give your equipment to for repairs. Unfortunately, there are now many “theoretical specialists” who think about money rather than solving your problem.
Discuss the topic of “unauthorized shutdown of the computer” on the forum
Tags: turning off the computer, the computer turns off after, the computer turns off by itself, why the computer turns off by itself, the computer turns off during the game, the computer turns on and immediately turns off, the computer turns off by itself, what to do, the computer turns off after turning on, the computer turns off spontaneously, the computer constantly turns off
For any personal computer user, the situation when the computer suddenly breaks down is always sad (although what is not an excuse to drink coffee or chat with a friend at work). Yesterday, the PC that was working properly today categorically refuses to carry out user commands or does not turn on at all. And sometimes such an unpleasant situation arises when the computer turns on, the user has tuned in and has already begun his work, but after a while the monitor goes out and the computer turns off. What to do in this case and what is the reason for this “behavior” of the PC?
There can be quite a few reasons for malfunctions. IT Pro specialists know that one of the main reasons for a sudden computer shutdown can be a completely or partially faulty power supply. Based on our experience, this particular malfunction comes first when dealing with such a problem. It can be diagnosed by simply replacing the power supply with another known working PSU (power supply). In this case, it is better if the power of the new power supply is not lower than the power of the existing one. It is also necessary to pay attention to the fact that the number and type of connectors on the power supply used for diagnostics correspond to the connectors on the old one. Otherwise, you may have to additionally look for adapters. In order to replace the power supply, you need to open the system unit, in most cases, unscrew two screws on the back of one of the side covers and slide this cover back. On the back of the system unit, the power supply is held in place by four screws, unscrew them and carefully pull out the wires leading from the power supply to the devices. As a rule, one hour of uninterrupted operation will be enough to understand that the power supply is the real cause of problems in your computer.
Although problems with the power supply are the most common, diagnosing them at home (in organizations there are usually no problems with this) is often difficult due to the difficulties associated with finding a power supply for such diagnostics. So first, make sure you have a working electrical outlet, surge protector, or uninterruptible power supply. Check that you haven’t simply pulled out some wire, the machine has turned off, or you accidentally pressed a button on the surge protector. More than once we have encountered the fact that there is simply no voltage on the wire that goes to the system unit. A malfunction is another common reason for a computer to shut down unexpectedly.
The computer turning off after some time of operation may also be due to overheating of the processor or video card. The cooler responsible for cooling the processor may not work at full capacity due to the same “overload” with dust, which prevents the normal flow of heat, or because it has exhausted its working life and requires replacement with a new one. In any case, it is recommended to keep the equipment clean and be sure to thoroughly vacuum the inside of the system unit.
But sanitary methods for removing dust are unlikely to help if the motherboard (capacitors, etc.) fails. Here, expenses cannot be avoided, since this technical problem can only be solved by replacing faulty parts or having them repaired in a service center. This malfunction occurs frequently, but you will not be able to determine it yourself at home. A trip to the service center is required.
Another common cause of problems is faulty RAM sticks. Moreover, if there are malfunctions of this equipment, even if the computer turns on, its resources will not be enough for stable operation. The reasons for the failure of RAM strips can be different. Most often, if this kind of problem occurs, it will not be possible to solve it without replacing the memory sticks with new ones. Therefore, for diagnostics, find a stick of a similar type DDR, DDR2, DDR3 and replace the stick in your computer with it.
Sometimes users do not consider it necessary to turn off the computer correctly (command: Start - Shutdown), but turn it off simply by unplugging the cord from the outlet. This leads to the operating system crashing and the PC stops working normally. Therefore, you don’t need to waste time to turn off your computer correctly.
In addition, viruses can cause such a failure. In this case, it is already necessary to perform anti-virus treatment of the computer or even completely reinstall the operating system.