HDCP is "High Definition Copy Protection" and is employed on HDMI to prevent illegal copying of copyrighted Hi-Def content. All HDMI enabled devices must have HDCP included or else hi-def material, such as HD-DVD and Blu-Ray will not play via HDMI. All I can think is that you have an Elite. By default, the Elite has HDCP disabled, but if you use a HD-DVD drive with it, it turns HDCP on when protected material is detected. Is it possible this may be what's causing it?