Can't access To joomla administrator? or Password and user name do not match? here the solution .
Sometimes for disabling joomla authentication module administrator username and password doesn't match.For that reason you can't access your admin panel.Here the Solution
First Step. Sign in to your control panel and click on phpMyAdmin .



For Hosting Server with a control panel like cPanel,Log on Your Cpanel and click PhpMyadmin

like this Screenshot.



see more click here

Thanks for posting! Worked like a charm.

Was about to reinstall Joomla after deleting database tables, etc.