Im not sure this is the right place for my problem, i added on because the symptoms seem similar, but outside of the icestorm demo, my issue seems random, i played DayZ the other day for like 7 hours without issue, then last night after 2 minutes in i got the reboot. im thinking it might be more like a short issue but i dont know how to test for that shy of installing into a different case... which im probably not far from trying.