Post count: 1629

As a first step I’d set the overscan and all other video settings in the /boot/config.txt back to default (comment out). Also make sure the output (via the menu accesses by x) is set to your TV output i.e. 720 or 1080p.

Is that a TV or monitor you have there? Is it 1080p?

Then try it on another TV/monitor to check if it any different.