i let someone play with my computer, an they uninstaleld a sound device or somethign else i dont KNOW about. when i went to reinstall it in device manager, i realized that the menu for device manager was completely blank. there were no TOPICS, no options, no files, nothing. i dont know where to go from here. help?I'm not convinced you really know what Device Manager is.  How about telling us exactly how to open Device Manager as a way of verifying you know what it is? Much more info on your MACHINE and OS and someone will be along shortly...i have xp from 2003, and i think someone deleted the audio driver. Is this what you did: Setting the plug and play BIOS OPTION (PNP OS) in CMOS Setup?  And, you're saying not having the plug and play BIOS option enabled in CMOS Setup causes Device Manager to be completely blank?    See belowwhen plug and play was disabled, i could not VIEW any items under device manager.  i tinkered with it for about 3 hours, but finally my sound is working again. thanksIt is best not to monkey around with BIOS settings unless you know what they are and what changes can cause. Lesson learned?That's the best way to learn about these stupid computers.  And hopefully a lesson is learned.

Always messing with stuff,
Hoop2077