How do you turn the screen on a laptop?

I went for a quick meal and while eating my brother has somehow turned the screen (ie the picture) …

Windows key + left arrow key (or right)

Give it a try with Ctrl + Alt + Arrow keys (upwards should be "normal" again)

I mean you have to first press the right mouse button and then there's somewhere turn picture

This will "only" move the active window to the edge of the screen