Hopefully this Hasn't already been addressed somewhere, I tried searching for it. I have two GTX 260 Core 216's in SLI and I am trying to run HDMI to tv which is a Mitsubishi 52HM84. When I connect the tv with the DVI - HDMI adapter, in the display properties the tv is shown conected and working. I have the latest NVidia drivers, 197 I think. I've tried all the different possible resolutions. I've tried cloning and extending. Everything I have tried shows no picture, not even a flicker on the TV. And yes there is a checkmark in the "use these displays" box. I tried to use the TVtool, but I got the famous "tvtool was unable to start the NT service..." I'm running windows 7 if that matters. I just can't figure out why if it's an HDMI output there is no picture on the TV. I've verified that the cable isn't broken by hooking it up to the blu-ray player. Anyone have a clue? Also I have the main display plugged into the top card, closest to the motherboard. And the tv plugged into the port away from the motherboard. In the HDCP box it shows that the tv is capable. I have an idea of another option but have no clue if it's a possible. I don't understand what the output is out of the computer, but as long as the feed matches up to whatever a Blu-Ray Player or DVR is it should work, right? So is there a seperate video card I could add into my machine just to be able to watch movies from my pc on my TV through HDMI? I have no idea what I would be looking for.