Recently I’ve been asked many times to help my clients with the problem of being unable to install HD audio drivers after Windows has been newly installed. Every time you try to install audio driver of your new motherboard you get something like this: “Install Realtek HD audio driver failure!”. Whatever you do to install this driver doesn’t help. I bet you even tried to reinstall your Windows XP and update BIOS but the problem was still there. There is an exclamation point on the Audio Driver in the Device Manager that points on some problem with the driver or that the driver is missing. You try to uninstall, update, etc… to no avail.
The problem lies in incompatibility of your motherboard’s HD audio driver with the current operating system’s UAA (Universal Audio Architecture) driver. All you need to do is to uninstall the system’s UAA driver and then reinstall your audio driver.
Right click on My Computer, then click Properties, then go to Hardware and click Device Manager.

Expand System Devises and then right click on “Microsoft UAA Bus Driver For High Definition Audio”, press Uninstall and you good to go to reinstall your Audio Driver. If it still gives you the same problem try to reboot the PC and then try to install it again.
Uninstall is not allowed for this device - you will get a message saying that device decendants are required to boot the PC.
Go to http://support.microsoft.com/kb/888111
and request the hotfix. MS will email you the link = 67MB! and the password needed for the install.
i had been triedthis.but stil its not working.
Hi razeev,
It should work.
Have you uninstalled UAA driver?
Not working what?
Are you not able to install the audio driver or there is just no sound?
Tell me exactly what is happening.
Vadim
I’m encountering this issue as well. I followed the steps outlined, but the issue remains identical as before. The manufacturers’ drivers reinstall the UAA Bus Driver, and I still get an error.
Did you do restart after each action? Particularly after uninstalling Microsoft UAA driver?
What do you have XP or Vista?
Please report
Vadim