While usually all I need is to set the audio to HDMI, the TV needs to be on the non-DVI audio HDMI port (varies with TV) as well as everything being perfect on the PC.
There is no one issue/cause I've uncovered. I fixed 20 machines and had 20 different issues.
This is where I think your machine's maker needs to do their job.
I connected my pc to a tv (using HDMI cable), however only the video comes through to the tv.
My video card is Radeon 5850.
I have enabled the HDMI option in the audio properties of my pc sound card. What am I missing here? Thanks for any info.