Had the same problem with Vista...(no audio device installed)
Try this it works.........first go to microsoft and install the
upgrade
(KB929685).....then go to the control panelsystemdevice
manager.....highlight the sound controller.......uninstall the High
Defination Sound Device and uninstall the driver (check
box)........restart
the computer and the system will reinstall both and the upgrade
prevents it
from happening again.

I've already tried the KB929685 update. It won't install. I get the
message that the update doesn't apply to my system.

I have a Realtek ALC888 HD audio codec on a Gigabyte 965P-DS3 Revision
2 motherboard. What hardware do you have? My guess is that the
update is not for all audio codecs.

George

On Mar 18, 9:35 am, wrote:
Had the same problem with Vista...(no audio device installed)
Try this it works.........first go to microsoft and install the
upgrade
(KB929685).....then go to the control panelsystemdevice
manager.....highlight the sound controller.......uninstall the High
Defination Sound Device and uninstall the driver (check
box)........restart
the computer and the system will reinstall both and the upgrade
prevents it
from happening again.