As soon as the computer is turned on, the power goes off as soon as the system is turned on

There are probably the following points.

1. The voltage is unstable.

2. The power supply of the computer is insufficient.

3. CPU overheating protection.

4. Electrostatic interference.

5. There are poor contact places on the motherboard.

6. Memory problems.

Well, reinstall the system.

After turning on the power supply and pressing the power switch on the computer host, sometimes it can start into the system normally, but sometimes press the power switch of the computer host for no more than 3 seconds, and the host power supply will suddenly automatically power off as soon as it is turned on (the power supply fan is turned, but the monitor has not yet appeared on any screen and the power is automatically cut off), and then no matter how you press the power switch on the computer host it does not work (the power indicator on the motherboard in the case is not on). 2. After encountering this situation, I usually open the host panel, clean the memory, graphics card, network card and motherboard, and then boot it after installing the above plug-ins. And sometimes just turn on the host panel, the power indicator on the motherboard will be on, and then it can start normally when you turn it on again. (Now the memory, graphics card, network card and motherboard are very clean, the power supply I also opened to see, the dust inside was also cleaned, no traces of capacitor damage were found in the motherboard and power supply, but the phenomenon of automatic power off no more than 3 seconds after booting is still often occurs.)

3. The computer will automatically power off no more than 3 seconds after booting, generally only when the computer is turned on for the first time, and the computer has not been restarted during the use of the computer, and this phenomenon does not appear every day, but only occasionally. 4. Before the computer host automatically powered off, I didn't hear any abnormal alarm sound from the motherboard, memory, and graphics card.

This situation is mostly caused by memory failure or poor contact between the motherboard and the hard disk, you can first unplug the memory module and wipe it with an eraser on its gold finger part. Motherboard failure is more complicated, you have to understand that the motherboard is often prone to problems, if you are not very familiar with the computer, you still take it to the repair shop, and then there is a hard disk that is prone to poor contact.

The computer will automatically power off after a while after starting, and the reasons are as follows:

1. The power supply is unstable, the voltage is not enough or it is broken.

2. Poor contact of the motherboard power supply.

3. The CPU conducts heat poorly, overheats, the CPU fan does not rotate or the speed is slow or even broken.

Tools: eraser, memory stick, screwdriver.

1. Use a screwdriver to remove the screws from the main unit.

2. Open the side cover of the case to see the approximate location of the memory module, which is usually near the CPU fan.

3. Gently push the buckle on one side of the memory module outward, and push the buckle on the other side away, and you can remove the memory module after both sides are opened.

4. Wipe the gold finger part with an eraser to remove the memory stick, the poor contact is mainly caused by dust and gold finger oxidation on it, do not touch it with your hands after wiping, wipe the eraser scraps on it with a cotton cloth, and then install it back on the host.