so My buddies rig that I built for him started just shutting down. it runs fine for web browsing runs fine for furmark, runs fine on prime 95 intel burn test etc etc. BUT when playing games like battlefield, mass effect 2 , civilization etc etc it just straight shuts down when gameply time comes. I tried the gpu in both my systems and it runs any game fine. We went out got a corsair 650TX did the same thing, so we got the corsair 850TX same thing, even tried my corsair 950TX same thing. tried my ram in his system his ram in my system, same thing. im stumped. maybe someone here can help or has knowledge of this type of problem. SPECS: Intel i7-860 @stock and overclock doesnt make a difference same thing MOBO: Asus Maximus III formula Ram: Patriot VIPER Sector 5 2000mhz, also tried my Gskil tridents 2133mhz GPU: HD5770, also tried 8800 GT PSU: Corsair 850TX HDD: WD Velociraptor OS: win7 64 bit ultimate. COOLING: thermalright Venomous-X and stock for everything else. Please help im seriously getting frustrated. I even tried over volting the cpu with no avail. EDIT, updates: latest bios installed on board would/could software do this?? it seems to be its only doing it with DX11 games. like mass effect 2 or batlfield BC2. any other games are working, COD4, CIV 4, anything that is DX10 and under is working.