Is there a way to disable HDMI video, but retain the audio signal?

This may be a more complicated question so I will also shout out to @wendell

I am using Windows 7 and a GTX780

I just upgraded my speaker system, but there wasn't much for higher end 5.1 self powered systems so I went with an AV receiver with 5.1 (unpowered speakers).

-I use HDMI to send the audio signal to the receiver.

-I also use dual link dvi to send the video signal to the monitor. I do this because it is an Asus VG278H 3D monitor (no display port). Dual link dvi is the only way to get 120hz (HDMI 1.4 only does 48hz I believe).

Now the receiver I have has a GUI so I tried to use the HDMI out to connect to the monitor. The problem is: the Nvidia surround feature detects the monitor through the HDMI video pass through, and runs it as two monitors and strangeness ensues. There does not seem to be a way to completely disable a monitor.

I tried running through the integrated graphics port and disabling its display adapter (the display and audio adapters are listed as two different entities in device manager) . Unfortunately disabling the video adapter also disabled the audio.

Is there anyway to disable nvidia surround (multi monitor support)? Or any hacks I could do to stop this from happening?

short of going to the red team there is a few things you can do. when you disable the display adapter you need to right click on the speaker icon on your start bar. select playback devices now right click the list of options that popup. now select show disabled and then select show disconnected. if you have never done this before it will hide all devices that are not plugged in and will hide all hdmi ports that are not in use. if you device is not on the list after hiding everything else then you will need to go through the hdmi sources 1 by 1 and find the one that is plugged in trial and error. after you find your device you select it and click make default.

Thanks for the reply, but this did not work. I disabled the integrated graphics, but the audio connection was nowhere to be found.