I hadn't looked at your screenshot. Have now and it looks okay.
And your reference to Microsoft Data Access Objects 3.? Library is intact?
Have you tried a quick compact and repair of the database?
For your information that "thing" you refer to as the pop-up has a name. It's called Intellisense.
So, what about other properties and methods with Intellisense...do they work?
Try VBA. and see if it drops down for you...