I have my desktop PC hard wired by HDMI to my digital TV (Panasonic TX-L47EB). Netflix works fine on my PC, but when I swap to the HDMI input on my PC, it doesn't work. I can display my computer desktop on my TV, and get the Netflix menus where you get the movie selection. When I play a movie on my PC, it displays and works fine. When I switch to the TV HDMI input, I get sound, but no video. The screen is just black. Anybody advise what may be wrong?