Learn how to fix phone booting problem
There are several things you can try to fix a phone that is having trouble booting:
Charge your phone: If your phone battery is low, it may not be able to start up. Charge it for at least 30 minutes before trying to turn it on again.
Restart your phone: Press and hold the power button for about 10 seconds until the phone vibrates or shows the logo. Release the button and wait for it to reboot.
Remove the battery (if possible): If you have a phone with a removable battery, remove it for about a minute and then reinsert it before turning on your phone.
Try booting in safe mode: Sometimes a third-party app may be causing the booting issue. To check if that's the case, boot your phone in safe mode by pressing and holding the power button, then tap and hold "Power off" until you see the "Restart in safe mode" option. Tap it to enter safe mode.
Reset your phone: If none of the above methods works, you may need to reset your phone to its factory settings. Keep in mind that this will delete all your data, so make sure to back up your important files before doing this. To reset your phone, go to Settings > System > Reset options > Erase all data (factory reset).
If you've tried all these steps and your phone still won't boot, it may be a hardware issue, and you should take it to a professional for repair.