Admin pin lost on back up computer ver 4

I have a backup computer I went to update with the database backup from my main machine - they are not networked, connected. Looks like a disgruntled employee changed the admin pin on me. How can I recover it?

Thank you
Paula

What database type are you using? If SQL or localDB (SQL single user) you can use MSSQLM (SQL manager app) to go into database and change the pin.

SQT ? Is what the zip file backup ends in.
SQL Server Database Primary Data File (.mdf)

does this help?

Thank you
Paula

MDF file means you are running SQL Express (either Full or LocalDB version).

Download SQL Server Management Studio (SSMS) to be able to view and manage your Database.

thank you for your help