I cant connect my TV "Samsung 55" 4K UHD LED Smart TV UE55JU6875XXE" to my computer. My Asus GeForce GTX 970 Strix DirectCU II graphic card have HDMI 2.0 and also TV has. The dealership gave me a UHD HDMI cable HAMA 2.0. so it should just be plug and play.. When i have it all connected the...