When i am playing games on my p.c. such as cod4 and fallout 3 my computer will just turn itself off. it worked up until my brother installed "pc booster" he messed around on that. when i went to play it worked for about 5 minutes then turned off i tried and tried and it did the same thing. even after uninstalling "pc booster" it still didn't work. also when i reboot i some times get the blue screen of death and it takes me a few tries to get it to boot up. is this due to pc booster or something else? p.s it doesn't happen when Im not playing games. it has happened before but started to work again. PLEASE HELP!!!!!! this is my specs : Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ (2 CPUs), ~2.7GHz Memory: 2046MB RAM Hard Drive: 250 GB Video Card: ATI Radeon HD 2600 PRO Monitor: LG L196W(Digital) PLEASE HELP ME!!!