i recently had my 9800 gt vid card take a deucer on me. soi took the time  to clean out my whole case spray all the shit out of the fans and heat coils above my processor. then put it all back together got the new vid card in but now my pc just randomly shuts down when ever it wants especeally when i try a vid card stress test with furmark or when i try to play css   i tried taking my mobo out and set it out of the case to see if it would work thinking it would have a ground or something and it didnt shut off then but ive put it back in and out 3 times since then i dont know what its coming from   any ideas anyone?