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 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 8 installation media.