[QUOTE=carwiz;1913287]By specification, HDMI is two channel audio. If you want more, you need to use S/PDIF out and a decoder capable audio device. Some devices with HDMI input "fudge" the extra channels by delay or frequency changes but PC HDMI output is Stereo. It has nothing to do with the OS. If your PC audio output device and drivers
will allow it, you can get up to a combined 10.1 channels through the output jacks on most PCs. Even with Windows.
As for your sound disappearing, it could be that you have selected the display device to be the default audio output. If you disable the device, Windows will disable the output since it no longer exists. You should review your setup and determine the best options for your needs but I would suggest that you change the default output to the system speakers. When you want the video device (TV) to be the primary audio output device, change it back. It takes all of one right click and a few left clicks to accomplish this.[/QUOTE
I have read people get theirs working with hdmi and 7.1
The problem I think people have is there TV is in-between their surround sound device; computer, TV then receiver. The TV itself only has two speakers and the computer reads that info and will only deliver 2 channels.
Trying to sell my old stuff with no hdmi. Then try going to my receiver first and tv second. Probably run into a video problem.