Any ideas? Problem with HDMI audio

[sam.roxx]

I am running an Asus M3N78-VM hooked up via HDMI to an Onkyo TX-SR806 reciever. I am having some trouble with the HDMI audio... for some reason I cannot get sound out of the front right speaker.
I have tried changing the HDMI cable to just make sure and different HDMI ports on the reciever. Reinstalled and tried verious HDMI drivers as well as reinstalling Vista. Windows is configured to 7.1 just blows my mind that only one speaker isnt working.... The speaker works fine with other devices.
Any one else run into this problem?

Specs:
Asus A3N78-VM w/ onboard GeForce 8200
Athlon X2 5000
2x1GB Crucial Ram
1 Seagate 320 GB HD
1 Seagate 1TB HD
Lite-On Bluray player
Antec Minuet 350 Case
Onkyo 806 Reciever
65" Mitsubishi Reciever

 

[vischo]

Doesn't seem possible, you're sure speaker is working with other devices?

 

[Veedo]

what driver are you running? try this one, it fixed some issues for me.
http://nvidia.custhelp.com/cgi-bin/nvidia.cfg/php/enduser/std_adp.php?p_faqid=2384&p_created=1237970084&p_sid=MJfFdNtj&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MywzJnBfcHJvZHM9MyZwX2NhdHM9NjAmcF9wdj0xLjMmcF9jdj0xLjYwJnBfc2VhcmNoX3R5cGU9YW5zd2Vycy5zZWFyY2hfbmwmcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1IRE1J&p_li=&p_topview=1

very odd its the right speaker...maybe a center channel but a right speaker? check wiring and receiver settings?