Elgato only picking up white noise.

I have an Elgato HD60 and I have been trying to get it to pick up my main pc audio since I'm using a to pc setup. the Elgato is setup to receive HDMI audio but all it outputs is white noise on my streaming pc. I've tried analog audio too and its the same outcome. I haven't been able to find anything about this, so it may just be a hardware issue? Any help is appreciated.