1. If you are able to navigate Windows with the monitor display as it currently is verify that the display settings for the monitor cannot be changed through a display manager or display utility by looking for any icon in the systray related to your video card.
2. If a utility is found in your systray that is associated with your video card, right click this icon and try to locate any rotation settings. In the case of the NVIDIA utility, the user should locate Rotation Settings and be able to select this option to rotate to 0 degrees.
3. If you are unable to locate any utilities displayed in your systray or any rotation settings, open your display properties by clicking Start, Settings, Control Panel, and double clicking the display icon. Within display properties, check the settings tab for any additional settings or rotation settings that may be able to correct your issue.
4. Finally, if you are still unable to locate any feature of your display properties that enabled the monitor display to be rotated, we recommend you delete your display adapter in Device Manager and reboot the computer to allow windows to re-initialize your video card. Information about the Device Manager can be found here.
5. If this does not resolve your issue, we recommend installing the latest video drivers on your computer.