Laptop has display bezels all of a sudden?

I've got a little problem. I leaned a lot on my keyboard and since then my laptop display has a black bar on the left and right, probably I accidentally pressed a key combination. How can I undo this? Thanks in advance

Jannks

Take a look at "Settings" -> "System" -> "Display" and then in the tab under the tab "Screen resolution" change to 1920x1080.
If you have any further questions, feel free to PM

Worked.

Gladly!