1. Navigate to phpMyAdmin and select the database for the Joomla! site in the left-hand drop-down list box. This will show the database tables on the left side of the screen.
2. Click on the table "jos_users" in the list of tables.
Find the user whose password you want to change and press the Edit icon for this row
1. A form will display that allows you to edit the password field.
3. into the password field and press the Go button





