Just press and hold CTRL and ALT and then press the up arrow and the screen will return to it’s normal orientation.
In order to support devices with different orientation you can rotate the screen. The screen can be rotated left (left arrow key), right (right arrow key), upside down (down key) and normal (up key) while pressing CTRL and ALT.
My guess this is going to be the next practical joke at the office 🙂
In case the keyboard shortcut doesn’t work, it can also be fixed through control panel settings described in this article.