1. Login to phpMyAdmin and select Joomla’s db from the drop down menu. It will show all the tables in that db.
2. In the text field enter the following query.
UPDATE `jos_users` SET `password` = MD5( new_password ) WHERE `jos_users`.`username` = admin ; [Replace the term new_password with your new password and admin with the exact user if it’s different from admin.
3. Click the GO button once you completes the 2nd step.
4. You should now able to login with the new password.
If you require help, contact SupportPRO Server Admin