I'm currently unable to have sound on my computer. I've tried several versions of the Realtek audio drivers from the Realtek website but they haven't installed correctly. When I use the Installer from the website, I recieve a failure message and the [Error Code : 0x000005b4]. When I install from the zip file and try to update the driver from device manager, it times out, or just doesn't work. The file I used was Vista_Win7_R236. directly downloaded from the Realtek Website I have Version 6.1.7100 Build 7100 of Windows 7. This is 64 bit OS. IRQ 20 High Definition Audio Controller In System Info, it doesn't have any devices listed. This is an onboard audio device as part of my EVGA NF750i SLI. I know the sound card works because I have no problem at all in Ubuntu.