I would try the following.

1 Make a copy of the original, and try to open that (That is the 'live one')

2) If you can't open that on either, you may be able to get a 'previous version' - Right click the file, and select properties, there is a previous versions tab. - If there are any, save it to a new location.

3) Create a new database and see if you can import any objects from the bad one:- I've never had any success with that, but some have.

4) Restore one from your system backups, and re-input any data since the backup was taken

5) If none of that works, then you have to purchase a professional Acc MDB Repair tool in order to fetch inaccessible data.