It looks like this all along:
everything black and in the middle it has been charging for 10 minutes
Everything black and in the middle it has been charging for 10 minutes
If everything is black, then there's nothing in the middle either.
Just keep the power button pressed until it has switched itself off completely and then restart.
That doesn't work I've already done
Then start in safe mode (F8)
How do I do that? I just press f8
Yes, press F8 several times in succession until he has accepted the key and can start in safe mode
How long should i do this
Press several times when booting until the prompt appears. Should not take longer than 1 minute