STEP 1: Click on executable file, Install it and Open it
STEP 2: Now Browse the master.mdf file by click on browse button.
STEP 3: Verify master.mdf file and select open option for further process
STEP 4: As selecting master.mdf file the tool shows its overall Username and their password in two fields i.e. Empty and Unknown.
STEP 4: Then select the username to reset SQL password but before this a alert message arrives to the screen which asks about the backup of master.mdf file. If already taken then click on yes otherwise take the backup first
STEP 5: On clicking Yes the password of the selected user reset successfully
STEP 6: Now you can easily login in SQL Server database