Re: Whats wrong with my pc?
Upping AA shouldn't give you problems. Gonna need more info on your rig. Memory timings, OS, etc. I see your not OCing so that's not the problem. I would use Everest to double check all your temps, too. I assume this isn't a newly built rig and it's been OK until recently?
EDIT: Oh, and what case and how well ventilated is it?