I have this same issue with a Panasonic Plasma TV 42", I however haven't connected the DVI, I just see the CTRL-I screen and the pc boots correctly into win7, but no display. I can remote to it just fine, but the video must be switched to the DVI as there is also no audio coming through the HDMI port.
This pc works normally if I connect it to any other HDMI TV/Tuner I have, only fails with the Panasonic Plasma TV.
I have just the opposite problem when updating to bios 129 (I wan't DVI as primary).
If you update to BIOS 129 it will use hdmi at boot.
Why can't Intel add a simple setting for 'primary display' in the bios.