UAA Bus Driver For High Definition Audio
To find out if it is working correctly, follow these steps:
If you see a yellow exclamation mark ( ) next to the ‘Microsoft UAA Bus driver for High Definition Audio’ listing, then there is a problem affecting the UAA Bus driver on your system. To fix the issue, first try installing Windows XP Service Pack 3.
If installing Windows XP Service Pack didn’t correct the issue, or you are using Windows XP Service Pack 1 or 2, Windows 2000 or Windows Server 2003, then you will need to download a special Microsoft UAA Bus driver update (see related links, above, for the download link) and restart your system.
After installing the patch, go back to the Device Manager and check the status of your Microsoft UAA Bus Driver. If the Microsoft UAA Bus driver has appeared without the yellow symbol (pictured right), you should now be ready for the next step of installing the High Definition audio driver. You need to first determine which High Definition audio controller is on your system, then visit the manufacturer’s site for an update or for further instructions. To check the status of the audio driver on your system, open the Device Manager again and click on the heading ‘Sound Video and Game controllers.’ Once again, a yellow exclamation mark means there is a problem and it’s time to hit the Troubleshoot button or download a new driver.
If you are still experiencing issues after downloading the drivers, (remember you need to restart your computer), go back to the Device Manager, right click on the ‘Microsoft UAA Bus driver for High Definition Audio’ entry and select Properties. Click on the ‘Troubleshoot’ button and follow the prompts. In most cases this will help find a solution. Alternatively, right-click and select ‘Update driver’ while your computer is connected to the Internet.