Recently I have been getting this issue more and more and its basically my pc shutting down not like when you shut it down normally or a crash or blue screen but just going down like you pulled the plug from the pc. I checked overheating in the processor and graphics card but that doesn't seem to be the case. It also only happens when playing certain games. My guess is that the power supply has gone bad and I need a new one but I'm not certain. Anybody got any idea?