Under the Device manager for both my CD-ROm (Sony CD-Burner) and DVD-ROM (Plextor DVD Burner), they both have a yellow exclamation point by each device. In the details it says that there could be a problem with the registry for these devices. I have uninstalled them both and re-installed them both numerous times. But the same thing is still going on with both of them though. Any ideas for me? I plan on physically removing the drives here in a couple minutes, and trying out a spare cd-rom drive I have lying around. If that doesn't work, looks like I'll be re-formatting my HD and re-installing Windows XP Pro all morning This is on my HTPC, which was just recently built 2 months ago. Can a virus disable devices?? What a mess!