If you have a monitor that rotates and you want to quickly rotate the Windows Desktop, there are keyboard shortcuts you can use with some graphics cards. These are normally disabled unless the rotate monitor option is enabled.Press the Ctrl and Alt keys together and then one of the arrow keys to change the orientation. Press the left arrow to rotate 90 degrees to the left, the right arrow to rotate to the left, and down to display the screen upside down. Try them out - if they work on your computer they can be very useful.