Hello, I have a fun little problem that needs a solution. Currently I am getting artifacts on my screen and random black screen freezing in games and when my computer is idle. At first I received the error message (display driver stopped responding, windows fixed the problem etc.). After it 'fixed' the problem, my computer would do the same thing. Naturally I assumed it was a graphics card issue. I went to the store and picked up an ATI 5770 and ended up receiving the exact same problem! I figure it might be a heating issue, but that would be strange since it locks up when the computer is idle. So I open it up and all the fans are running before, after, and during the problem. I figure it could be a virus or a problem with Windows 7, so I take that hard drive out and put in an older one that had Windows Vista on it. I end up with the same problem. I think maybe it is a memory problem, so I run the memory test that Windows 7 comes with and it finds nothing! The only other parts I can think of are my motherboard, my cpu, and my power supply. I'm at a loss here and any help would be great.