I have managed to have my computer run for over 48 hours without a problem. My video card is working well, I can continue to play games, and write e-mails, surf, and a lot of other things (simultaneously). I seem to have figured out a temporary solution: I took one of the case sides off and am using a regular fan to blow air into it. I think this will accelerate the dust accumulation process but as long as my computer is running, it is all good. Even thought it works, I still do not know the cause. I think that it is the CPU: 1800+, because the cpu fan blows very hot air from it, and from my large harddrives. I think with these hot computer parts running at the same time, my computer is becoming unstable due to the heat created. (and the elevated temperature inside the case). Unfortunately, my case does not have anymore fan options, that I have not used. so I guess it is time for a new case. Money,... Money,.... And more money,... Being put into this money hungry computer. )-: