Is it related to your improper operation before turning off the phone? For example: playing games, watching videos, operating big things, and using computers for a long time? Or download inappropriate things, or delete system files, or shut down. Failure won't happen for no reason, will it?

If you really can't install the system, you can't install it yourself, so go to the maintenance office and ask someone to help you. If the machine can't be turned on anyway, it is because of the sudden shutdown, which has caused damage to the disk. One is to take out the battery of the motherboard and discharge it. The other is to try it on for a while, otherwise it can't be repaired.

One is to put it away for half a day or one day, and sometimes it will recover itself. The other is to reinstall the system.

As long as you pay attention to your computer, it won't be like this when you turn it on.

Ask me any questions.