Hi. None of my audio inputs are enabled, they're all greyed out, but the output works fine. Built the PC a few months ago, but just got round to using LINE IN. Windows XP SP2 (rolled back from SP3) GigaByte GA-P35-DS3L motherboard (on-board sound) Latest Realtek driver downloaded Tried the following: In 'System Devices', disabled then deleted MS UAA bus driver for HD audio. Uninstalled Realtek driver. Rebooted, only to find the MS UAA had reinstalled itself without asking. Repeated the above a few times in 'Safe Mode', exactly the same outcome. (at some point, I rolled back to SP2). Uninstalled KB888111, and also deleted this folder from the registry (followed by a registry clean). I know a number of people have had success following the above procedure, but I just can't get rid of the Microsoft driver. There must still be something left over that keeps resurrecting this file, or I'm missing a vital operation? Any ideas?