I recently bought a used VisionTek ATI Radeon 2600XT AGP 512MB Video Card none of the drivers work for it, they work when its installed but they fail when computer is restarted or turned on, during Windows start up. It is an older system K8N MB AMD 64 Athlon, I have never seen this from a video card, is the card bad? Like I said everything runs fine til I restart the system. Pulling my hair out over here.