Computer users occasionally have a need to rotate, or "flip," a monitor display to be better able to read long documents or to view pictures. Because rotating a computer screen is such a basic function, modern operating systems (Windows XP and up) include hot keys and display options that enable the user to rotate the computer screen by 90, 180 and 270 degrees. Rotating the computer screen allows for more display options. For instance, when rotated 90 degrees, a 1680x1050 monitor becomes a 1050x1680 monitor, which provides more vertical pixels than a standard display.
Windows XP/Vista Monitor Orientation
Minimize any windows or programs to the taskbar. Click the desktop. Press "CTRL" + "ALT" at the same time.
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Press one of the arrow keys to flip the monitor orientation by 90, 180 or 270 degrees. The left arrow rotates the computer screen 90 degrees; the down arrow rotates the computer screen 180 degrees; the right arrow rotates the computer screen 270 degrees; the up arrow resets the monitor orientation.
Rotate the computer screen in Windows Vista by opening the Control Panel, searching for "Tablet PC" and changing the "Orientation" drop box to the desired rotation.
Windows 7 Monitor Orientation
Click the Start menu at the lower-left hand part of the screen, and open the Control Panel.
Select "Display," then click "Change display settings" from the left column. When using multiple monitors, select the monitor that you would like to rotate.
Click the drop box next to the "Orientation:" option. Select the desired rotation and click "Apply." Click "Keep Changes" or "Revert," depending on preference. Click "Apply" in the Display Settings window. Click "OK" to finish.