Press Ctrl + Alt + Down Arrow on Windows
Press Ctrl + Alt + Up Arrow to return to normal
On Windows, right-click the desktop and open Display settings
Find Display orientation
Select Landscape, Portrait, Landscape (flipped), or Portrait (flipped)
Click Apply
On some Intel systems, use Ctrl + Alt + Arrow keys to rotate the screen
On Mac, open System Settings
Go to Displays
Choose Rotation and select 180 degrees if available
On some Macs, hold Option while opening Displays to reveal rotation options
On Linux, open Display settings
Change the rotation to Upside Down or 180 degrees
Click Apply or Save