GPU outputting mono color

[Prof Dr Pfeiffer]

Hello guys,

I had my a problem with my pc. Sometimes when I played games the display suddenly went black. I could still talk over teamspeak, but couldn't see anything. I thought it was a problem with the graphics card (R9 390) so I sent it back and bought a new one (Gtx 1060). But now the is the same problem. For example yesterday I played overwatch and after two games the display suddenly went green. The gpu isn't overheating, its max temperature was 55 C. It shouldn't be a power problem either. I got a 650 W Power Supply and a power calculator says my pc should use around 300 W and suggested me 500 W Power supplys. I thought it might be a loose connection at the pci slot, but I don't touch the pc before it goes blank and I also don't have to relocate the graphics card to work again, I just have to restart the pc.
Do you have an idea what could be the problem?

Have a nice day
Yannick

 

[Prof Dr Pfeiffer]

The strange thing is, it only happens during gaming. Maybe it's a software problem, but I switched from amd to nvidea with new drivers and everything, so I don't know which part of the software could be the problem.