If you still can't see it, Have a look at removing your normal.mxt
From
C:\Users\<USERNAME>\AppData\Roaming\ESRI\Desktop10.3\ArcMap\Templates
(This however will reset all your folder connections, server connections and database connections etc..)
Make a copy of the normal.mxt and paste to another directory,
Remove the normal.mxt from the directory above
Open ArcMap, - See if you can view the FIND XY..