Shortcut Key To Flip The Screen In the Windows TO 180 Degree..

This ones a cool one to play pranks on your friends, especially if your friends do not know how to get it back to the normal state.

The shortcut is

for normal windows : Ctrl + Alt +
and for 180 deg it is : Ctrl + Alt +

How ever you should know that these are default shortcuts for Intel Extreme Graphics Controller, and you can change them. To check / change or disable these keys go to control panel–>Intel Extreme Graphics–>Hot Keys.