I have a Dell Precision with xp pro sp3 and the sound will not work, the play buttons are not grayed out, nothing is on mute and when I run the Dell diagnostics utility from the boot menu the sound is loud and clear. Dell told me it is a Windows OS issue because the hardware is working. I have tried loading the updated drivers from Dell, nothing. I have also removed everything from the sound and rebooted and then reinstalled the drivers, nothing. it is a sigmatel integrated sound card. Any help is appreciated.