Help getting 5.1 working? MSI 990FXA-GD80

RipGroove

Honorable
Jan 12, 2013
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I can't seem to get Windows 7 to recognize I have 5.1. I have an MSI 990FXA-GD80 motherboard and the AV receiver I use should auto detect that a 5.1 signal is present but it does not?! All it plays are the front left and front right speakers. And there seems to be no 5.1 settings in any Windows applications.

This is the RealTek software I have, and you can see (bottom right) that 'optical' is selected...


This shows that I have the right setting in Windows...


But in the drop down menu here, there's no 5.1 option...