I built a HTPC about 8 months ago. I use the onboard HDMI port to go to my 42" Philips 1080P LCD HDTV. If I reboot my computer with the HDMI plugged in I see the boot screen then it goes black and my TV says unsupported video format and the computer restarts. It does this over and over. If I unplug the HDMI cable and restart, wait a few minutes for it to get into windows then plugin the HDMI cable it works like a charm. Anyone else experience this? It is a 64 bit version of the Beta. My computer has 4gbs of ram, nvidia on board HDMI. Let me know if you have any idea, or need anymore information. Thanks, Jack P.S. I have installed the latest version of my drivers from the windows update.