Check that your monitor supports portrait rotation
Turn off the monitor and computer
Adjust the monitor stand to allow rotation, if supported
Rotate the monitor 90 degrees clockwise or counterclockwise
Reconnect or adjust cables if needed
On Windows, open Display settings
Select the monitor
Change display orientation to Portrait or Portrait (flipped)
On macOS, open System Settings
Go to Displays
Set rotation to 90 degrees if available
If the stand does not rotate, use a VESA-compatible mount or monitor arm
Tighten all screws and ensure the monitor is stable
Rotate any on-screen content or app windows as needed