Getting this error constantly while opening programs or alt-tabbing, I've tried factory resetting windows, clean installing and rolling back nvidia drivers, and setting TdrDelay to 8 in regedit. I'm going to go ahead and call this a hardware issue. I was just wondering if anyone knew what piece it could be? I ran memtest for 1 pass so I'm going to rule RAM out. Should I order a new graphics card or could it possibly be my PSU or mobo? What ways are there to find out?