Sound Issue

Hello Guys !

Just upgraded my GPU 560 to 580,

I have 42" Plasma TV using HDMI cable with adapter to the new card DVI Port. (NVEDIA High Definition Audi)

Headset/Mic are connected to C-Media PCI Card

No matter what I do or try to do, I can get sound only to the head set, even if I pick up the TV Sound card it will only get me sound to my headset.

I check the TV sound on window sound setup, & yes, I can hear the TV Speakers responding properly to the test .

No sign of any issue on Device Manager

Had no issue prior to the upgrade.

Any Idea ????

Thanks in advance

Yair