Can't add records into a form in access 2007?

I have this database with data about soil analisys. And it goes like this: a project, where are several samples; each sample with data (pictures, info, text) and the results. I’ve been asked to create a form to display the data; I made the form and inserted code to it so the pictures are read from a folder, and only the name of the picture is stored in my db. I´m ashamed to say i put a hard path, but at the end, it works; the idea was to keep it simple.
I can browse the records from the bar at the bottom, it comes with access, i dont know its name right now; but I cant add or edit records, even when i set the properties to “Allow Edits”, and “No Locks”, “Data Entry”, “Allow Additions”, to yes. I’ve been reading that if i have a problem with the database the records lock,.. How can i know why the form keeps me from add data? Do I have to create another form specifically to insert info?