Try booting up your PC/Laptop with the HDMI cable connected to a TV that is on. You can try booting up the PC/Laptop while the TV is off and then turn on the TV. If the above options dont work, try booting up the PC/Laptop first, and, with the TV on, connect the HDMI cable to both the PC/Laptop and TV.

How do I get my TV to work when it says no signal?

Reset the boxTurn everything off at the wall.Check that all cables are securely and firmly in place.Wait for 60 seconds.Plug your TV box (not the television set) in and turn it on.Wait another 60 seconds, or until the lights on the TV box have stopped flashing.Plug everything else back in and turn it all back on.Mar 24, 2015

Why does my Samsung TV keep saying no signal?

First check that your TV is set to the correct Source or Input, try changing the Source or Input to AV, TV, Digital TV or DTV if you havent already. If your “No Signal” message is not due to incorrect Source or Input being selected, then its most likely caused by a set up or antenna fault.

Why do my TV keep saying no signal?

A No Signal, No Source, or No Input message will appear on your TV screen if the TV is not receiving a signal from your TV box. This is often a result of either the TV box being powered off, not being properly connected to the TV, or the TV being set to the wrong input.