I ran the computer with the video card removed and using on board graphics. Still having problems. Now I'm having terrible errors trying to startup the computer. Still a lot of blank/black screens. Many times the computer will crash and give a black screen. In Event Viewer I found an error: The driver detected a controller error on \Device\Ide\IdePort0. So I'm thinking this is the hard drive. I actually have noticed odd loud noises on startup. Although, none of the HD diagnostics I've run have shown anything wrong.