As of yesterday, when I play an mp3 (using Windows Media Player 11) , the volume button on my keyboard dosen't work & the on screen volume bar does not appear. The mute & pause function are OK, just no volume. It is a Microsoft Natural Ergonamic 4000 usb keyboard. Everything was fine on Friday. Could this be a Driver issue or some glitch with WMP ? Sorry if this isn't posted in the proper place.
Am running XP SP2 on a desktop.