hi i reinstalled windows onto my system and everything went fine. all drivers installed and codec packs. i installed windows with sp1 so i wanted to upgrade to sp2 so i could get the benifits and whatnot that it has to offer. i did this and everything seemed fine until i tried to watch video files or run games. if i try to watch a movie online throught quicktime or windows media player my computer lags down and 100% of the processing power is used and the video doesnt even play. when i try to load games like counterstrike it just freezes. does anyone know what could be going wrong i have checked all my hardware and it is all good and i can do everything with sp1 installed this only happens why i try to go to sp2. plz help me!