Does the card/system seem stable once you get into windows? Also, is this a new build? If it is not new, was this problem always here or did it just start?
This is a relatively new build. I built it one year ago during summer vacation. I just did an update from Windows 7 for my video card. I installed a newer version but I think that I have solved my issue. Is there any reason why the Microsoft Windows 7 update would screw up my computer?