Working on a computer with sound driver issues. I tinkered with it (installing and uninstalling various drivers) to the point where it doesn't show up with any errors in device manager (this is XP), but the sound device does not work and isn't recognized. It's a realtek HD card (ALC880) and any driver I attempt to install, it fails. I tried to uninstall the "unknown device", but that also fails. Even in safemode and using devcon remove from command line. I think if I could get it to remove I might be able to install the drivers properly. But I'm not sure. Any ideas?