HP PCs - Change display settings, background image, icons, and screen
https://support.hp.com/us-en/document/ish_4984418-4984464-16
WEBIn Windows, right-click an open area of the desktop, and then select Display settings . To change the Display orientation between Landscape and Portrait, or to flip the orientation, select an option from the Display Orientation drop-down menu, and then click Keep Changes or Revert .
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