My computer has recently started shutting down due to what i am pretty sure is my graphics card overheating. It happens when playing WoW, but hasnt seemed to happen with any other game. I checked the temp gets up around 90c. I have a EVGA 80 plus gold 750W psu, z77 mobo, i7 3770k. It has started happening recently more (possibly because summers starting in Australia). I only play WoW on mid settings and comfortably sit at 100 fps. It doesnt happen with other games, but i usually dont play them for the same lengths of time, but WoW is pretty low intensity. Is this likely some kind of driver/software issue, or just overheating.