I have an old compaq 5150, that is no longer booting. I had originally thought that it was a bad PS, but I had no way to test it since it uses a wierd 3 connector PS. Something just hit me though. This computer has onbaord video which i disabled in order to use a differant card, but I sold that card recently. Since you need a video card to boot a system would that be causing my problem? I didn't think so at first since I knew it had the onboard video, but if it is not being recognized cause I disabled it, that could be the problem. Any help.