HDMI port not working after connecting to TV

My laptop's HDMI port stopped working about 12 months ago, and I have yet to find the cause. The GPU is an Nvidia GeForce GTX 765M.

I remember it failed to work after connecting it to my 50" Samsung TV to watch a movie. At first I thaught it was the cable, but after testing with various monitors and cables, I came to the conclusion which is the port is not working.

Recently I tried connecting annother laptop to the same TV. The HDMI was working perfectly up untill then, but now I have the same problem on that computer.

My question is:

Is it possible that the TV ruins the HDMI port for any or some devices connected, and is there a way to fix this?

The PC maufacturer says that they can take a look at it, but I can not be without my computer due to school and work, so I am hoping to be able to fix it myself!

In advance, thanks for the read and reply. Anything helps.