I'm using Evernote v. 126.96.36.1998 (261696) in Windows 7 Professional 64-bit SP1.
When I click in Atlas, it shows only a gray background with a compass rose, the title "EVERNOTE ATLAS" and the text "See your notes on a map. Atlas organizes your notes by location."
My laptop doesn't have location services, but I have a lot of notes with geotagging information. Nevertheless, none of them are shown in Atlas.