I recently purchased a Sony KF60WE610. Cable company came out and put a HD box in They connected it with composite cables ... said that is all they use.. worked fine. I purchased a DVI cable for $100, and plugged it in. I ran the audio directly to the HT receiver. Now, almost every time I turn the components on .. I get sound but no picture ... the screen says "Your DVI display does not support HDCP use component source instead". I have had the cable company out twice ... they said nothing wrong with the signal. I hate to go back to composite after spending $100 on DVI cable & wanting the best picture possible. Sometime it works, when I shut down the cable box and restart, it will work ...?? I called Circuit City ... they said contact the manufacture... that's not easy. Any suggestions/help is appreciated.