Gigabyte GA-MA78GM-S2H motherboard sound problem on Home theater PC

[Nutty]

I have Gigabyte GA-MA78GM-S2H motherboard in my Home theater PC. I connected it to my Onkyo 705 amplifier. I get a very good picture but I don't get audio via the onboard HDMI.

Do anyone have any advice about this setup?

[southparx]

It is always recommended for users to upgrade their drivers before reporting about the problem. Have you upgraded your HDMI driver?

[Nutty]

Yes I have tried that already infinite number of times. I have tried installing from my motherboard CD, from Gigabyte and also from the Realtek but nothing works.

Now the weird thing is that if I install the drivers, it says no drivers installed and if I uninstalls them it shows drivers have been installed.

Currently, HDMI out, Speakers and Headphones are not plugged in. Now when I install the drivers all the above disappears accept the HDMI out which is plugged in, but still nothing.

[Lemog]

I've recently updated my motherboard bios from F3 to F5 and this resulted me saying that I am enjoying with my configuration without any problem. Hope this will help you too.