Hello, I've having an issue with my PC while gaming. The issue is when I play a game like World of warcraft It can be playing it from anywhere to an hour to 10min when randomly my pc turns completely off. It's not a freezing. My whole pc just turns off. I do not have the issue at all when browsing the internet or writing documents, just gaming. When this first started happening I thought it was a heat issue so I checked all my temperatures and they are all around 50 degrees Celsius while gaming. My computer runs windows vista 64 Quad Core AMD Phenom X4 9550 2220MHz Radeon 4850 hd And when looking at everest it says my +12v is at 11.904 my +5v is at 5.00 my +3.3v is at 3.264 and my cpu core is at 1.232. If you need any more information about my PC just ask. Help would be greatly appreciated.