I have an LG tv and when I turn on my computer, it doesn't show up on the tv. It recognizes the hdmi cable, but nothing happens when I put it on the right input(yes I have tried all the inputs). This same question is asked a couple other places, but the fix is for laptops. I tried turning on my computer before turning on the tv (a solution they said would work) but nothing happens. It just comes up saying "no signal".