i need some ideas on how to go abt diagnosing why my pc randomly freezes. sometimes it will rund for a week or more and other times it will freeze multiple times in a row just after startup. but it usually does it when i try to load a game or download something. if i can get the game launched then it doesnt give me a bit of trouble but getting games to launch is a nightmare. i have a psu tester and it says that my psu is fine. and i have run chkdsk and come up with nothing, and i have run memtest for 12+ hours with no problems. it will do it whether i have my system overclocked or not. and i dont have a video card that i can use to test.. is there something that i can use to test my gpu? any help would be much appreciated.