So when i plug the tv into my video card the card seems to recognize it and put my monitor into the 2 screen mode... but the tv appears to not sense a signal... like it still says hdmi 3 on the top which usually goes away once something is turned on. and i cant try to look at the control center because its making all the apps that start come onto the tv that isnt showing anything... i tried a new hdmi cable that didnt work... please help someone... i have windows 8.1