I can't get into the bios?

So
3

So I was in Fortnite with my buddy half an hour ago but all of a sudden I had a blackscreen except for a small rectangular box in the lower left corner so then I turned off the pc and started my pc again and then came a rock sign from the bios I come but not in win10 and if i want to go into the bios it doesn't work what should i do?

Oc

Test the F keys at startup. Mostly F12

So

No keys work

Po

Or that's not the case sometimes

Wrong bios update? Di Disillusioned
Don't come to the bios? So Solomonhelpful
Opinion on the pc? Sh Shrimp55
My pc is overheating? se sebastian