Microsoft UAA Bus Driver for High Definition Audio (HDAudBus) Service Defaults in Windows 8

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

The Microsoft UAA Bus Driver for High Definition Audio service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Microsoft UAA Bus Driver for High Definition Audio fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the HDAudBus service hasn't been started.

Restore Default Startup Configuration for 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 %WinDir%\System32\drivers folder. If the file is corrupted or deleted, you can put it back in there.