Desktop computer can not turn on, press the host boot button, the display shows entering power mode, the mouse and keyboard lights are not bright, seek help, thank you!

A big possibility is that the memory is loose. I'm not sure if it's a good idea, but I'm sure it's a good idea if it's not a good idea, but I'm sure it's not a good idea.

Also try unplugging the case and taking the motherboard battery off. The first thing you need to do is to take the battery out of the motherboard and put it back in after a few minutes. How long does it take for the motherboard to discharge, 1~30 minutes. The next consideration is a graphics card problem or a motherboard problem.