On my "regular computer, I see my CD and DVD drives listed in device manager in the category: DVD/CD-ROM devices. On my backup computer, I just happened to notice CD and DVD drives are listed in category:unknown device. They are both working properly - or at least seem to be. What would cause this and does it matter? Thanks, Len
LenC, see if the various steps found in the article below helps you: How to troubleshoot unknown devices that are listed in Device Manager in Windows XP
LenC, you're welcome! Let us know if any particular step in that article helped your problem. Take care.