I have tried countless times to get my plasma TV (Panasonic Model#: TH-42PZ700U, TH-50PZ700U, TH-58PZ700U ). The TV always shows a message saying that there is no source. I've tried using the NVIDIA control panel to change my resolution, force detect displays, etc. I am using a VGA connector. When using my plasma with Mac OSX, everything works fine. A little help here?