You can follow below steps to reset Admin password:
- Login to cpanel.
- Click on “PhpMyAdmin”.
- Click on particular database which is associated with your Joomla website.
- Here you can click on table “databaseNamePrefix_users”.
- You can click on edit option in front of particular option.
- Choose MD5 option from dropdown list and enter the password which you like to set.
- Now click on “Go”.