Today i started up Team Fortress 2 like allways. After 2 minuttes it crashed.... but it was not a normal crash.. my whole computer was stuck even my motherboard did'nt respound (I could not shutdown with kabinet buttons). The only thing i could was to turn off the power. After i tried again and it happend AGAIN!!! Now ive tried many things like reinstalling And i still cannot play anything :'( Did i just fry my 8800GT?