Learn how to recover joomla password
Change the Password in the Database
If the admin user is still defined, the simplest option is to change the password in the database to a known value. This requires that you have access to the MySQL database using phpMyAdmin or another client.
These instructions show how to manually change a password to
form will display that allows you to edit the password field. Copy the value
into the password field and press the Go button. phpMyAdmin should display the message “Affected rows: 1”. At this point, the password should be changed to “secret”.
make sure they are legitimate. If you have been hacked, you may want to change all of the passwords on the site.
The above steps helps to recover joomla admin password or reset the password of admin section. you can reset the password using database/phpmyadmin.