Microsoft UAA Bus Driver for High Definition Audio - Windows 7 Service
High Definition Audio Bus Driver by Microsoft Corporation.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Manual | Manual |
| Home Basic | Manual | Manual |
| Home Premium | Manual | Manual |
| Professional | Manual | Manual |
| Ultimate | Manual | Manual |
| Enterprise | Manual | Manual |
Default Properties
| Display name: | Microsoft UAA Bus Driver for High Definition Audio |
| Service name: | HDAudBus |
| Type: | kernel |
| Path: | %WinDir%\system32\DRIVERS\HDAudBus.sys |
| Error control: | normal |
| Group: | Extended Base |
Default Behavior
The Microsoft UAA Bus Driver for High Definition Audio service is a kernel driver. If the Microsoft UAA Bus Driver for High Definition Audio fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the HDAudBus service has failed to start.
Restore Default Startup Type of Microsoft UAA Bus Driver for High Definition Audio
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreMicrosoftUAABusDriverforHighDefinitionAudioWindows7.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the HDAudBus.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 7 installation media.