Microsoft UAA Bus Driver for High Definition Audio (HDAudBus) Service Defaults in Windows 7

High Definition Audio Bus Driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Microsoft UAA Bus Driver for High Definition Audio
Service name:HDAudBus
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\system32\DRIVERS\HDAudBus.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HDAudBus

Default Behavior

Microsoft UAA Bus Driver for High Definition Audio is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Microsoft UAA Bus Driver for High Definition Audio fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the HDAudBus service is not running because of the error.

Restore Default Startup Configuration of Microsoft UAA Bus Driver for High Definition Audio

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config HDAudBus start= demand

3. Close the command window and restart the computer.

The HDAudBus service is using the HDAudBus.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.