Most of the time, flipped landscape or portrait orientation could be activated accidentally through keyboard shortcut, such as when children plays with the computer, and send users into panic mode. But the screen orientation could be reverted back to normal easily.
Press Ctrl + Alt + Up arrow or Down arrow (or the navigation keys) simultaneously to change the orientation of the display and rotate the screen until it’s back to normal position.
On some brands of PC (if the above doesn’t work), try the Ctrl + Shirt + R keyboard shortcut instead.
If keyboard shortcuts do not resolve the issue, try the following steps:
- Right click on the Desktop.
- Depending on graphics card or display adapter installed, choose one of the options available:
Select Graphics Options -> Graphics Properties -> Hot Keys, and set it to Disabled
Select Graphics Options -> Graphics Properties -> Rotation, and select Rotate to Normal
Select Screen resolution or Display settings (in Windows 10 or later), and select Orientation or Portrait from the Orientation drop-down box.