Screen goes random color when overclocking.

BennBen

Commendable
Mar 8, 2016
64
0
1,640
Hey, so i got my gtx 970 a while ago and then i had a 500w supply, so i tried to overclock and it worked fine, i got it to 140 core and 200 mem. It worked fine on heaven. I launch CS:GO and it works fine for like 30 min, then the screen just goes some random color and i have to force close the computer (sometimes i have to unplug it). So i thought it was my PSU as it was only 500w, so i went and got myself a fractal design integra m 750w, i know its a bit overkill but anyways.

So i overclock again and the same thing happens again, it works fine on heaven, but on cs after like 30 min it just goes a color. (and on witcher 3 nvidia kernel drivers keeps crashing).
I dont know whats causing this so please help!

Regards, Ben.