Hi!, I have a HP computer and a Samsung led TV. I used to watch films and play games om the computer with an HDMI cable attached to the TV for months. But today it just don't wanna work… ;( when i attach the HDMI cable to the computer the screen usually goes black for a second but now i can't see anything that says the electronics are connected to each other. It only says "no signal" on the TV. Please post any help here!