Press the power off button and volume reduction first, and then press 10 seconds or so. If it lights up, it will restart.

If not, just wait a week or so, and naturally there will be no electricity, and there will be no electricity. Maybe.

Or it may be because your screen is broken. In this case, you can contact the seller. As long as it is still under warranty, it is best to go to the place where you bought it, and he will give you free maintenance.