1. The host power light does not light up and there is no power.

1. Power supply problem

If your computer won't turn on, the most likely cause is a power problem. First, please check whether the power plug is plugged in properly, whether the power switch is turned on, and whether the power cord is damaged. If the power plug is plugged in, the power switch is on, and the power cord is not damaged, but the computer still won't turn on, then the power supply may be faulty. At this time, you need to replace the power supply or find a professional for maintenance.

2. The host power light is on, but the monitor does not display the picture.

2. Hardware failure

In addition to power issues, hardware failures can also prevent your computer from turning on. For example, the memory module is damaged, the hard disk is damaged, the graphics card is damaged, etc. Check the hardware carefully.

3. The host has a screen, but cannot enter the system.

3. Software problems

Software problems may also prevent the computer from turning on. For example, operating system corruption, virus infection, etc. For example, you can try using anti-virus software to scan and remove viruses.

4. BIOS setting issues

BIOS is the computer's basic input and output system, which controls the startup and operation of the computer. If the BIOS settings are incorrect, the computer may not start. You can try to enter the BIOS setup interface to check whether the settings are correct. If you don't know how to enter the BIOS setup interface, you can press the DEL, F2, F10 and other keys when the computer starts, depending on the brand and model of your computer.

In addition to the common issues listed above, there are a few other issues that may prevent your computer from turning on. For example, the computer is overheated, the power cord is too long, there is too much dust inside the computer, etc.

The above is the solution to the problem that the computer cannot be turned on brought by Huajun editor. I hope the above problems can help you!