my pc is an older model. dell dimension 3000. about 2 months ago i put a new video card in it and it ran fine for a couple weeks. now my pc keeps freezing and its completely random. i took the video card out because my power supply is only 170w and the card requires 250w even tho it did work for a while til i started getting blu screens. since i took the card out i don't get blue screens anymore but it freezes randomly. i thought it might be a heat issue cus one time it froze i pulled the plug waited a minute and touched the heat sync and it was pretty hot. i can play world of warcraft for hours and it wont crash. earlier i tried to empty the recyling bin and it froze. it also freezes when i finish win update. other than that it can be random while browsing the web etc.