My computer just shuts down, then it turns on automatically, and it doesn t turn off again?

The computer automatically restarts when the BAI shuts down normally, which is usually caused by a problem with the motherboard's power management. Some of the power management components of the board are not very precise in their response to level signals due to the influence of wiring design and part quality. Since an instantaneous high voltage is generated at the moment when the power is cut off from the motherboard, this high voltage exists for a short time and has little effect on the hardware, but it usually causes a small pulse to PCI equipment such as network cards and modems.

If it is not determined to be a noise signal and the auto-wake function is enabled in your motherboard's BIOS, the motherboard will detect the external connection request of the network card and other devices, and will automatically turn on the computer. This reason is caused by hardware, so simply flashing the motherboard bi0s will not solve the problem. You can try to disable the auto-wake function in the motherboard BIOS, or you can turn off the PCI card wake-up function in PowerPmanagementPsetup.

And the reason for shutting down and restarting is likely to be related to the CMOS settings, go to CMOS, in the power management menu, find that the "PMEpEventPwakePup" item is "Enable" (the default), change it to "Disable". Turn on your computer again and the fault should be cleared. You can also try:

Right-click on "My Computer" and select Properties. Select the "Advanced" tab, find "Startup & Failback", and click the "Settings" button next to it.

In this case, it is most likely a problem with the system.

It is recommended that you check whether there are any other third-party software in the process before shutting down the computer, close them all first, and then restart the test.

If that's still the case, redo the system.

The power on-off key is in poor contact, or the power on-off key is short-circuited. First it is caused by poor contact, and then it is caused by a short circuit, and you should focus on checking the connection between the power switch cable and the motherboard. It's a hardware issue, and if the software starts, it's possible that it's a virus. Result in.

Consider reinstalling the system to try, it may be a software conflict, and the system will be automatically protected.

Just describe, ignore it. In this case, either there is a problem with the motherboard or the power supply. Most likely it is the motherboard. If you send it for repair, it is generally difficult to check out any problems.

I don't know how to continue asking, satisfied.

It is recommended to try to replace the power supply directly, if such a problem still occurs, replace the motherboard, either the voltage is unstable, or the motherboard has a problem.

It's basically a problem with the system, and reloading is the easiest way to fix it.

Force to turn off, press power directly.

There may be a problem with the system.