Graphics Cards

[Blundermann]

I accidentaly change my rx 570 bios and now my monitor cant display.

How to fix it

[black_zion]

Only way is to put it into a system with another working GPU and reflashing the stock VBIOS to it.

[mstfbsrn980]

Changing the BIOS CSM mode (this setting should be disabled in the Boot Settings) might work. But first you may need to change this setting with IGPU, if exists or you should try different GPU first.