My laptop won't rotate the game

So i just got a new asus laptop . I connect a keyboard and a mouse It works great when the laptop is at a normal position but when im trying to get rid of the keyboard of my laptop and make it into like a tablet, the screen won't rotate. This only happens with League . Everything else rotates like a tablet and still able to use keyboard and mouse. Any suggestion on how to fix this problem? I would like to play how it is in the thumbnail with keyboard and mouse. Thanks.

Edit: Im also using windows 10 so im thinking that its the problem since it recently came out.