Hi there, I have Dell XPS 420 with SigmaTel on board,
cant get any sound output, both in XP and windows 7 but can hear sound ok through speakers but sound levels not moving and you cant adjust the AudioInputMixerProperties Master Input Mix, all greyed out,
however if I use old PCI sound card it works ok! Had no problems before on old PC, just this one.
Any help much appreciated!