Solution for Realtek AC97 onBoard Get the following most up-to-date driver R2.14 for Vista You may download the drivers from realtek itself, but trust me you need to have time for that file transfer and webpage! Realtek HD Audio Driver from manufacturer Then do the following steps: - Extract the archive - Right-click the setup.exe file -> choose Vista in Compatibilty mode - Start setup.exe This worked for me. I now have 5.1 sound and the realtek control panel works. MSI K9N Neo V2 - mainboard Hope this helps you all.