Has been an issue with the SigmaTel High Definition Audio not working for months now and no one seems to be trying to fix it? There are quite a few posts about it.

It affects most new Dell (and HP and probably others I presume) laptops.

If the setup.exe is run from the Dell driver install it works, but the driver from that in the packs ends up with a yellow exclam in devmngr.

If anyone could look into this it would be great!