1. There is something wrong with the power supply. For example, there is something wrong with the high-voltage rectification filter circuit of the power supply, that is, the large capacitor of the power supply bulges and leaks, and it can be turned on when it is turned on. After a period of time, due to the insufficient power supply of the large capacitor, the power supply began to protect itself, so it would shut down, the screen would be black, and it would automatically restart, so it would be brief to replace the power supply or repair the large capacitor and other components in the power supply.

2. Problems with memory and graphics card, such as the integrated memory chip of memory and graphics card, lead to crash, black screen and automatic restart.

Solution: Just put the memory and video memory aside, remember the direction, then rub it back and forth with the eraser at the golden finger (that is, the part with copper), and then plug it back into another slot, and it will be OK. If it still crashes, you need to repair the memory and video memory chip of the integrated block, and it can be solved.

3. Your CPU fan is stuck or the radiator clip is loose. This is because your fan is stuck in dust or the fan is broken, and the CPU can't dissipate heat. When the temperature reaches the temperature set by the motherboard, the startup protection of the motherboard will be turned off, so it will crash after a period of time, with a black screen and automatic restart. The radiator clip is loose, which will be the same as the above reason.

Solution: clean the dust and dirt of CPU fan. If the fan is damaged, replace the fan and reinstall the radiator to ensure that the clip is tight.

4. There are problems with the components of the motherboard, such as power IC, field effect transistor, CPU power supply, I/O virtual welding, etc. There will also be a collapse. Motherboard crashes are also common.

Solution: where to repair these electronic components of the motherboard.

5. There is something wrong with the computer's operating system, such as poisoning, file loss and so on. There will also be a crash, a black screen, automatic restart, and reinstalling the system will be OK.

6. There are too many bad tracks on the hard disk. When the hard disk reads these places, it can't be read, which will cause it to get stuck. After a while, it will crash, black screen, and automatically restart. The solution is to use hard disk to check and repair bad tracks or replace hard disk.