I have a problem using my new Onkyo SR707 receiver with Windows7 media center. I have a 47" Vizio LCD TV, the ASUS Xonar sound card, and Nvidia 8600 video card. I use the Asus Xonar DVI-hdmi "jumper" and then go from my HDMI out on my sound card to my receiver. I just sent a support question...

I can always get it working by restarting the computer. If I switch the receiver to another input (PS3/DVR/360) and then back to the computer, I get a black screen. Vista has all of the latest updates. I'm running the latest NVidia drivers. I've tried several different models of ATI and NVidia...