That's really weird. The following two suggestions will delete your custom hotkeys and menus.
1. Try going to Customize > Customize UI and Default Switcher and pick Default UI. See if that helps.
OR
2. Close Max. Go to C:\Users\USERNAME\AppData\Local\Autodesk\3dsMax\ and Rename your "2014 - 64bit" folder to anything else. Start Max, and see if everything works. You can undo by exiting and renaming the folder back to it's original name.
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Replies
1. Try going to Customize > Customize UI and Default Switcher and pick Default UI. See if that helps.
OR
2. Close Max. Go to C:\Users\USERNAME\AppData\Local\Autodesk\3dsMax\ and Rename your "2014 - 64bit" folder to anything else. Start Max, and see if everything works. You can undo by exiting and renaming the folder back to it's original name.
Also, let us know your system specs.