Changes in settings can cause the image on your computer screen to turn on its side or upside down. You can use a method below to change the screen orientation back to normal.
Method 1:
Log in to Windows if you are not currently logged in.
Press and hold the Ctrl and Alt keys while you press the Up arrow. Pressing these keys at the same time should rotate the screen back to the default setting.
Note: You can press and hold the Ctrl and Alt keys while pressing the Left, Right, or Down arrow to rotate the screen a different direction.
Method 2:
Right-click on your computer desktop screen.
Click on Screen Resolution in (Windows 7 and 8/8.1) or Display settings in Windows 10.
Choose Landscape in the Orientationdrop down menu.
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