I built a HTPC computer with this motherboard. At first all was well. But then (after a Windows re-load) the HDMI audio quit working (video was OK). I tried reloading audio drivers, HD audio drivers, even WINDOWS.

Well, now no audio works. I moved the computer into my office (no longer good as an HTPC so swapped it with my Gateway with HDMI out). Since, I have reloaded Windows again, reloaded audio drivers again. Nothing. I currently have Creative Labs speakers plugged into the 1/8" audio out jack. I have "Speakers" selected as the Default Device for audio (when audio is playing, you see the bar graph on the right dancing to the music). It seems the audio drivers are set up correctly, just no sound output.

Is the mobo likely defective?