i'm assuming this is the now infamous microsoft hd bus driver issue as you say it's realtek related. here's what to do if so:
I've been following this thread. I had a heck of a time getting the Realtek HD Audio on my motherboard working. I have a Gigabyte GA-G33M-S2H motherboard. I built a new system and installed my old hard drive. I've had so many difficulties, but now everything works just fine. The last problem was with the audio not working. Here's how I got it to work:
First I followed the directions from the Gigabyte website:
Quote:
1. Please make sure your Windows XP have included service pack 1 or service pack 2. Please right-click the ?My computer? icon on desktop. Select ?Properties\ General. (Please refer to picture 1 as below) If your system does not include service pack, please update from Microsoft official website. Please connect to internet and launch the ?Internet Explorer?, click the ?Tools? on the tool bar and select the ?Windows Update?.
2. Please make sure if the ?Microsoft UAA Bus Driver for High Definition Audio? exist in ?Device manager\ System devices?. Please right-click the ?My computer? icon on desktop. Select ?Properties\ Hardware\ Device Manager. (Please refer to picture 2 as below). If the ?UAA Bus Driver? does not exist, please install it from driver CD/ DVD. Please launch ?My Computer?, open CD/ DVD drive\ Audio\ MSHDQFE\ Win2K_XP\ US?, to execute kb888111xpsp1.exe (for SP1 system) or kb888111xpsp2.exe (for SP2 system).
3. If the ?Microsoft UAA Bus Driver for High Definition Audio? is work properly, there may be an ?Audio Device on High Definition Audio Bus? behind ?Sound, video and game controllers? or an ?Unknown device? behind ?Other devices?. Please disable this device. (Please refer to picture 3 as below). You can skip this step if device mentioned earlier does not exist in ?Device Manager?.
4. Please disable the ?Microsoft UAA Bus Driver for High Definition Audio? as well. (Please refer to picture 4 as below)
5. After that, please uninstall the ?Microsoft UAA Bus Driver for High Definition Audio?. (Please refer to picture 5 as below)
6. When finish the above steps, please click the ?Scan for hardware changes? button. (Please refer to picture 6 as below) When the ?Found new hardware wizard? display, please do not click the ?Next? button. Please click the ?Cancel? button at this point.
7. You can now install the audio driver from driver CD/ DVD or from the driver file that you have downloaded from Gigabyte website. (Please refer to picture 7 as below; the path in driver CD is \Audio \Realtek \Setup.exe)