Things You Will Need
Press and hold down the Alt and Ctrl keys.
While holding down the Alt and Ctrl, press one of the "arrow" keys to rotate the screen.
Depending on which arrow key is pushed, the screen will rotate from 90 to 270 degrees.
On some computers with XP Service Pack 2, it is necessary to turn off the number lock function on the keyboard and while holding down the Alt and Ctrl keys, press the number 1 key (end key) and then use the appropriate arrow key on the number pad by hitting it twice.
It can be a little unsettling to find your computer monitor screen's orientation turned sideways. By following the simple steps provided, you can have your monitor back to normal in no time.
Tips & Warnings
If you are playing a trick on someone using this technique, make sure they have a sense of humor.