1 year later...
I have exactly the same problem. The Dell/Sigmatel drivers make everything go mute, except deleting the registry key didn't do anything here.
Default MS drivers bring back the sound, but the webcam mic array fails.
Has any one figured out how to bring back the mic without killing the soundcard via Sigmatel's lame drivers?
Helping googlebot... Here is a compendium of knowledgeable articles on the topic. These seem to have helped some others.
MSDN Thread
http://social.msdn.microsoft.com/fo.../thread/867c58ec-a590-4db3-8d1a-3db6c3508d9f/
Dec '07 Blog Article: Solving the Vista "Failed to play test tone" sound problem
http://doogalbellend.blogspot.com/2007/12/solving-vista-to-play-test-tone-sound.html
July '08 Cnet Article: Users Fuming Over Vista Audio Driver Glitch
http://www.crn.com/software/207500472
Re: XPS 1530 Microphones
Discussion in 'Dell' started by briansage, Jan 2, 2009.