I am also facing the same issue as highlighted above, i.e. a blackout in my notes section of Evernote.
I followed the steps enumerated by Austic G (https://discussion.evernote.com/profile/241894-austin-g/) but when i try: HKEY_CURRENT_USER folder -> Expand the "Software" folder, I don't get any Evernote folder. What should I do in this case?