PC and now when i play games my PC shuts off.What's the problem? This problem happens when i play hi-end games such as Hitman or PES2008.I can either play it, but when i move from screen to screen quickly in the game my PC shuts off OR even when i click to play the game my PC shuts off.I have taken the side panel off and placed a fan next to my PC to keep the system cool but the problem still occurs.My PC specs are: AMD3200 CPU 2.01 GHz with 1Gb Ram, Windows XP and the New 8600GT.This issue started to happen after I installed the new graphics card!!What should I do to fix it and are there any websites which could help me with this problem?Cheers!!