Laptop Display is Rotated 90°

I ran a Windows 7 Pro SP1 repair install on my Lenovo X1 laptop to resolve problems with Windows Update. It was apparently successful. After the pending updates were installed, the display rotated 90° to the right. It displays correctly but in "portrait mode". I would much appreciate recommendations as to how to return it to a conventional horizontal display.
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Nick RhodeIT DirectorCommented:
Just press ctrl+alt+ arrow key to rotate the screen

Otherwise you can right-click the desktop and choose screen resolution.  Then under orientation you can choose portrait, landscaped, or flipped etc

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Joe Winograd, Fellow&MVEDeveloperCommented:
Control Panel
Change display settings

display orientation landscape
Select Landscape from the drop-down. Regards, Joe
jd987Author Commented:
That worked. Thank you very much.
Joe Winograd, Fellow&MVEDeveloperCommented:
You're very welcome. Happy to help. Regards, Joe
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Windows 7

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