I have an Alienware X51 with an NVIDIA video card that I use as my HTPC. The motherboard has an HDMI output and the NVIDIA card also has HDMI. When connecting the X51 directly to my TV via I get audio and video. When I connect the X51 to my Denon AVR-2308CI I lose video and audio. I can't seem to figure out what the issue is. Anyone have any suggestions? Thanks in advance!