Screen Resolution

Select 1:1 pixel mapping on your tv. It might also be called "Just Scan" or "No Overscan".

Try with this program I can't give you instructions because I never used it but I hope you can resolve your problem with it

change the resolution on your laptop to 1280x720 when you plug the HDMI in.
It will change the way it looks on the laptop screen, but the ratio will be correct for the TV.

Unless you're trying to use both at the same time.

eat a pie.

In your video drivers software(Well at least with Nvidia) there should be a desktop size a position tab, inside that you can fiddle with the overscan until you get it right.

Problem solved?