I have two TV's: a JVC and a Sharp. Both are HDTV's. I hooked my computer into the Sharp with a Belkin VGA cord and Radio Shack audio cords. There was a picture but no sound. We checked the connections and they were in the right place. With the JVC, we hooked the computer up and there was no picture. It said that it was an invalid signal and it had a pink picture. We checked the connections and they were in the right spots. We had hooked it up to the JVC the night before and had no problem. Any help would be appreciated.