Lord Gauron

Sure! Go to C:\Windows\System32 and right click on Drivers folder. Select
Properties and press the Advanced button. Switch to Owner tab and press
Edit. After UAC confirmation a new dialog pops up. Select the user wich you
want to have access to the directory in the "Change owner to" list and check
in "Replace owner on subcontainers and objects". (I had selected the
Administrators group.) Press OK. You have taken ownership of the folder.
Now go back to the Permissions tab. Press Edit and add the desired user
with full permissions. After you checked in "Replace all ex..." press OK.
Restart your system in safe mode and owerwrite the hdaudbus.sys with the
older version.
I hope you will succeed.