If you are the owner of a relatively "ancient" computer, then you may have observed such a mysterious phenomenon: the computer turns off when the game starts. This situation is common for older PCs, since the system requirements of modern toys are incredibly high. There are several reasons for turning off the computer when starting any game. Although, perhaps, the system requirements have nothing to do with it. But first things first.
Power Supply
Suppose you recently updated some component of the system unit. The rest of the "filling" has remained old. This is where problems appear when starting games. This is especially true for replacing a video card. In this situation, if the computer turns off when you start the games, there is nothing surprising in this.
The fact is that new components (especially video cards) consume much more energy than old ones. But the power supply remained the same, low-power. The computer simply does not have enough energy to run all the components. So he turns off the most energy-intensive - a video card. And what work without an image? Accordingly, the entire "system" is turned off.
The solution to this problem is only one - the acquisition of a new power supply. And it is desirable - as powerful as possible, in case of a future upgrade of components. It would also be nice to pay attention to the category of the block. It is better to purchase a power supply with the best optimization of energy consumption. Electricity will be consumed much less with the same capacity. This is a consideration from the field of economy.
Cooling system
The most common problem when running demanding games and applications is overheating of computer components. Most often, the processor and graphics card suffer. If the cooling system of one of these components is insufficient, the launch of a demanding game may very well “hang” your PC. This is another answer to the question why the computer turns off when the game starts.
A problem may also occur if the cooling system fails. However, this can be easily verified. If you have an ordinary PC, then just open the cover and look at the coolers of the video card and processor. If one of them does not work, then this is the problem. You can do only one thing here - replace the cooler. But if there is no money, or the shops are closed, and you desperately want to play, you can try turning on a regular household fan and directing it exactly into the system unit (of course, with the lid open). In some cases this helps.
To prevent such situations, liquid cooling can be installed. Of course, it costs a lot, but there is a guarantee that the video card and processor will not overheat due to an idle fan. Yes, and the "sistemnik" will make less noise.
A lot of dust
No matter how strange it sounds, dust and dirt can also become the reason why the computer turns off when you start games. The "system" of most users cause quiet horror and trembling knees. The fact that the computer is an excellent dust collector has been known for a long time. But for some users, the amount of dust and dirt just rolls over. The question is, how can a PC work normally under such conditions?
Most often, coolers of the processor and video card suffer from dust and dirt. The ventilation grilles in the system unit casing are also clogged. If anyone thought that these holes are solely for beauty, then this is not at all true. If the ventilation grilles are clogged, there is no air circulation. As a result, the PC warms itself. How can you not overheat here? When the game starts, a huge amount of heat is released, which does not go anywhere. Here is the reason for turning off. Just clean the system unit, and your PC will work like new.
Swollen motherboard capacitors
And this is serious. If capacitors are swollen, then write is gone. You won’t be able to chop into any standing game. "Mother" simply can not stand it. Capacitors can swell for a variety of reasons. But the most common is overheating due to dust and dirt. So, if anyone thought that overheating only leads to problems with coolers, know that in this way you can also kill the motherboard. With swollen capacitors, the symptoms of a “disease” are just these: shutdown at the slightest exertion. That is why when you start the game, the computer turns off. What to do in this case? Only change the motherboard, because repairs will be costly and pointless.
Also, capacitors can be blown on the power supply itself. But there is only one sense - to replace a failed component of a computer.
Problem with the graphics card driver
It’s rare, but it happens that the computer turns off when starting games due to a malfunctioning video card driver. If the driver was originally “broken”, then it may incorrectly adjust the temperature of the adapter, which leads to its overheating and shutdown of the computer.
You can do the following here. First, try rolling back the driver if it has been updated before. To do this, go to the "Task Manager", right-click on the name of the graphics adapter and select "Properties". Here you need to click the "Roll back" button and restart the computer. Secondly, you can completely remove the driver, after which the OS will automatically install the device with a different driver.
If after all this the computer turns off when starting any game, then it is not at all the driver.
Thermal grease
Strictly speaking, thermal grease is part of the cooling system. It exists in order to effectively remove heat from the processor. If it is dry or damaged, the PC may overheat. Accordingly, under load, the processor overheats and completely turns off the PC. That is why the computer turns off when you start the game.
There is only one way out - to clean off the old dried thermal grease and spread a new one. Only without fanaticism. The paste should be applied in a thin layer to the top of the processor case. Then the radiator and cooler are already mounted on it.
Conclusion
The reasons why a PC can shut down under load are varied. But they all have their own decision, no matter how difficult it may be. You may have to spend a tidy amount to fix your "iron friend". But there is no escape from this , because with all computers this happens sooner or later. And the point here is not at all in poor-quality components, but in the moral obsolescence of the hardware.