Larkbook (december 2021) : after booting, the screen remains black

Laptops LarkBook
1

Larkbook Intel Celeron N4120, larkbQ256G21091445
The screen went black as I was working, and since then, it remains black when I boot.
What can I do?
Thanks

2

Did you try to connect it to another screen? to see if the computer still works?

3

Вы случайно не отключили его включить держим Fn и нажимаем F7