HDMI Cord No Longer Works

Hello, For a few months now, close to a year, I have been connecting my laptop to my computer using an HDMI Cord because the screen of my laptop is broken. Yesterday I turned on my laptop and TV and it said it couldn't connect. I tried everything. I used a different HDMI Cord, tried plugging my laptop onto another TV and switched which side is plugged into the laptop and TV. It still won't work. I don't know what to do. Please help.