You do not need to reinstall X-Plane! You can probably reset a lot of these problems with the view by moving the preferences folder (it's found within the Output folder). Just move it somewhere else, like the desktop, and restart X-Plane. It will start with the opening movie and recreate the preferences folder as if it were a fresh install.
If you have a lot of customized settings you want to keep, you could then try putting pieces back in the new prefs folder from your original preferences folder that you moved. Restart X-Plane each time until you encounter the problem. Then you will know which file has the issue.