Allan, thank you for your quick response!
I read the thread, and I just updated my bios version again to the latest v 24.
Also I reinstalled the Realtec driver and software, as I had removed these.
In the Windows device manager, the previously listed HDMI audio device 'changed' into the Realtec High Definition Audio. And I was unable to update the driver automatically, it was stuck at a 2010 driver....
Now, I have two audio devices in the Win7 mixer: Speakers (Realtec High definition audio) ánd DENON-AVR.
When I select the Speakers option, there is no sound at all. With the Denon, I have sound but only 3.0 sound. The subwoofer is silent.
The Realtec tool only shows stereo output, and mono inputs no matter what I do. No matter if I select my Denon or the Speaker option in the mixer.
By the way: The Speaker option only shows 3.5" jack in the Windows mixer panel...
I hope this info helps!