I am sorry you are having problems with your system but let me help you.
Based on your description and the dxdiag report you have provided, we can do some troubleshooting steps:
1. As first step I recommend you updating the BIOS on your system.
2. Update your graphics driver by uninstalling the current driver and installing the latest that can be found at the following link:
3. Test a different HDMI cable (better Quality if possible)
hi kevin, thanks for you reply.
I tried the suggestions above, there is no newer bios than the one im using now and I've used 3 different HDMI cables (all which work fine with my ps3 and satellite tv) and installed the latest intel graphics and audio drivers (they come in the same installer package) but my problem was still the same.
I thought maybe upgrading to windows 8.1 will make a difference and went ahead, repeated the above steps and still nothing.
I just need the device to send passthrough audio to the tv but instead the audio device seems to be converting the sound to 2 channels and sending it via hdmi to the tv.