Here comes the message. It's gone.

Possible reasons and solutions for not turning on the computer;

1. battery reason. Check whether the power is sufficient, whether the battery is deformed or loose, try again after charging for more than half an hour (suitable for mobile phones that have not been used for a while), and replace the battery.

2. Check whether the key is out of order.

3. Mobile phone software reasons. For example, if you have brushed an unofficial system or ROOT, you can try the official ROM.

4. Mobile phone hardware reasons. For example, the water gets wet, falls, bumps and so on. Send it for repair

5. All-in-one machine, press and hold the power button 15 seconds. If it can't be turned on, charge for half an hour and try again.

Above, for reference.