My screen goes black after 3hours of gaming (i play witcher3), but the pc still running.

[ray.farandyrr]

is it because overheating on GPU ? i didnt check the temperature of the GPU ( gtx 1060 colorful 6gb ), but the air feels hot, the case is open. after the screen goes black the only way i can do is restart the pc from button case. should I use msi afterburner to setting my gpu fan speed?

 

[Dunlop0078]

Well maybe you should check the temperature of the GPU? Seems like the obvious move.

CPU temps and the rest of your system specs would be helpful as well.