Windows 7: Onboard Realtek Audio ALC883 is not detected

I installed Windows 7 Pro x64 and did all the updates but no sound. I have tried installing the latest drivers for the 64bit for the Realtek ALC883 but it still did not work. I did not think it would since Windows 7 is not detecting the onboard audio device. I have tried disabling the audio hardware in the bios and booting to windows then doing restart and re-enabling the onboard sound in bios and booting to windows. It is still not being detected by Windows 7 Pro x64. Any ideas?

Thanks for any help you can provide
Insleyg

MB - Asus M2A-VM

Try reset your Bios to Default settings.

I tried your suggestion, unfortunately no audio device is seen as installed. I tried loading the x64 vista version of the drivers in compatablity mode, after doing what you suggested, and they installed fine with no errors but I still no sound.
Any other suggestions would be helpful. My Award Bios version 0804.

Thanks
Insleyg

Update your bios: ASUSTeK Computer Inc.

Updated the bios. The sound works now!. Also, the update cleared up a problem I was having with video display.

Thanks