What should I do if the computer turns on and turns off automatically?

Computer startup and automatic shutdown fault 1:

The details are as follows: turn on the power switch, press the power button to start the machine, the fan rotates, and the machine runs. After a while, the power is turned off, the fan does not move, and the indicator light does not light up. It's no use pressing the power button again. Turn on the power supply, restart it later, and repeat the above situation. And after I dial the power of the hard disk, I can boot it up until I detect that the hard disk does not have this step. Reorganize the power supply of the CD-ROM drive, and you can turn it on normally for a day after fooling around (you don't have to turn it off for a longer time). Excuse me, what is this? I don't want to do this every day. How can I solve this problem?

Answer: This kind of automatic power failure after startup is probably caused by power failure or motherboard failure. There are many reasons for the failure, such as IC chip, capacitor burning, circuit problems and so on. Generally speaking, such a fault cannot be repaired by an individual, so it is recommended to send it for repair or replace the relevant accessories, and it is recommended to replace the power supply as soon as possible. In addition, the power supply quality problems of commercial power (such as low voltage, abnormal fluctuation, etc.). ) may also cause power failure.

Power failure may also be caused by the following reasons: first, there is something wrong with the power switch of the chassis, such as the failure of the reset spring; Second, the C P U has been overclocked, or there is something wrong with the C P U fan. Third, the optical drive hard disk and other accessories have a short circuit fault.

Computer startup and automatic shutdown fault 2:

A: It may be that the CPU temperature is high. It is suggested to download the CPU temperature test software online to test whether it is a CPU problem, and then consider changing the fan or adding silicone!

Computer power failure 3:

The drop in temperature may cause some problems that we can't figure out. I suggest you open the computer case, unplug and install everything you can, and see if you can solve the problem in the future.

Ps: In general, the solution of automatic power-off when the computer is turned on is that the power supply or motherboard fails. There are many reasons for the failure, such as IC chip, capacitor burning, circuit problems and so on. Generally speaking, such a fault cannot be repaired by an individual, so it is recommended to send it for repair or replace the relevant accessories, and it is recommended to replace the power supply as soon as possible. In addition, the power supply quality problems of commercial power (such as low voltage, abnormal fluctuation, etc.). ) may also cause power failure.

Power failure may also be caused by the following reasons:

First, there is something wrong with the chassis power switch, such as the failure of the reset spring.

Second, the C P U is overclocked, or there is something wrong with the C P U fan.

Third, the optical drive hard disk and other accessories have a short circuit fault.