What is the reason why the computer won t turn on 5

If a computer crashes when it starts, it can be divided into two types: POST and crash when loading the operating system. The specific troubleshooting methods for crash faults during computer self-test are as follows.

1) First of all, determine the situation before the computer failure, if the computer crashes after moving, it may be that the computer is subjected to a lot of vibration during the move, resulting in the loose internal parts of the computer and poor contact, resulting in a crash. Open the case and re-tighten the memory, graphics card and other devices.

2) If the computer crashes and cannot boot after upgrading the BIOS program, it may be that the BIOS program upgrade has failed or the upgraded BIOS program file is not compatible with the computer hardware, and the original BIOS program file can be used to restore it.

3) If the computer crashes after setting the BIOS program, modify the set BIOS settings back or use the "Load BIOS Defaults" option in the BIOS program to restore the BIOS program.

4) If the computer crashes after CPU overclocking or upgrade, it may be caused by CPU overclocking or upgrade, you can restore the CPU frequency to normal frequency or restore to the state before the upgrade.

5) If the monitor screen prompts "Keyboard Error" or "Hard Disk Install Failure" when the computer is booted up, indicating that the relevant device is not properly connected or damaged, you can reconnect or replace the faulty device.

6) If the screen prompts "Disk Boot Failure", it means that the system files are missing or corrupted, or the hard disk partition table is corrupted, you can repair the system files or restore the hard disk partition table.

7) If it is not the above problem, then check whether the inside of the chassis is clean, because dust corroding the computer circuit and interface will cause poor contact between the equipment and cause a crash, so clean the dust and equipment interface, and the fault caused by the dust can be eliminated.

8) If the fault is not eliminated, the hardware equipment compatibility problem and quality problem are finally eliminated by the replacement method.

In fact, there are many reasons why it can't be turned on, such as no power and memory sticks, which need to be checked one by one, if there are no problems, you need to take it to the repair shop to check.

Maybe there's something dirty in it.,I did it once.,Then turn on the host and wipe it inside.。

First check the power supply, and then see if the back board is loose, and then it is poisoned and the system crashes.

What kind of machine can't be opened?

Poisoned, broken hardware, unplugged, system lost files?

1. No power. 2. The switch is broken.

3. The motherboard and CPU are broken.

Once, after my machine was turned on, the display light on the main panel was not on, and the monitor had no signal input, so I looked for it on the Internet, and then unplugged the graphics card, memory or something, wiped it, and then it was fine.

It can be a system issue.

There are several reasons why the power supply motherboard CPU can cause not to boot.

If you are sure that the power supply is not broken, listen to the fault tone of the small speaker.