hey, that happens to me when my sound card comes loose. well, if you tried the restore point and your sure the device is physically installed properly, then remove the current drivers and all related software that came with it, restart the pc and reinstall. if that doesnt work, try a different pci slot. or does your rig have on board auido and your using a pci soundcard? post up the info of your system and let us know if your computer literate or not. another thing, how old is your rig and do you think the device burnt out on you?