So basically I've been scouting the internets for the fix to my black screen problem but nothing works for me.
I tried underclocking and undervolting. NOPE.
Flashed a new bios. NOPE.
Flashed a bios from another "compatible card". BRICKED CARD.
Flashed 290x bios. NOPE....
So to the problem: When I play games like Overwatch, GTA V, Warface I get a black screen and the computer freezes. Sometimes it happens after 30 minutes and sometimes 3 hours.
I never get a black screen when the card is idle.