Invert And Rotate Your Computer Screen

Here is cool trick to "invert and rotate your computer screen" you can rotate it by 90 or 180 or 360 angle. You can invert your window screen and can impress your friends, This is one of the scariest tricks which turns Windows upside down.
 Here are steps:

*  Press Ctrl, Alt and then any of the four arrow keys .
* Down arrow key rotate by 180 degree, invert screen.
* Left arrow key rotate by 90 degree.
* Right arrow key rotate by 270 degree
* Up arrow key make it normal again.