This worked for me, too. I have a Dell Inspirion. I just upgraded from Vista
Home Basic to Premium. The sound didn't work after the upgrade. I was very
happy to find this fix. I deleted the Sigmatel STAC92XX C-Major HD Audio
Driver in the Device Manager and restarted. I was very happy to hear that MS
startup chord and not see the red X over the speaker icon when my computer
> Try Deleting your Sound Card in Device Manager - Reboot
> Sound Card will be refound and then make sure you have
> latest Vista Driver installed.
> "bbsstmez" <bbsstmez@xxxxxx> wrote in message
> > Can anyone help? I was running Vista Home Premium (32 Bit) & upgraded to
> > Vista Ultimate. After the upgrade I lost 2 key components. One of those
> > being my audio. I went to Dells web site. The list an audio driver
> > "Sigmatel STAC92XX C-Major HD Audio Driver" which is Vista 32 bit
> > compatable.
> > I downloaded & installed it but still no luch. There is a little red x in
> > the tray on the bottom left of my screeen which when clicked says "no
> > audio
> > output deviceis installed". I went into device manager which lists my
> > sound
> > card as "Sigma Tel High Definition Audio Codec" which is listed as
> > working.
> > I am not very computer savy & out of my league, any further suggestions?
> > Thanks in advance for any help!