To use your display in landscape, portrait, or other modes
From the NVIDIA Control Panel navigation tree pane, under Display, click Rotate display to open the page.
If you are using more than one display, select the display you want to rotate by selecting it.
The default setting is No rotation (Landscape), which means by default that your desktop is set to Landscape mode. If you want a different rotation setting, select one of these options:
90 degrees to the left (Portrait)
90 degrees to the right (Inverted Portrait)
180 degree rotation (Inverted Landscape)
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