cannot access wp-admin

Hi, wonder if you guys can help…

i cannot use wp-admin url anymore … wp-login.php still works … but soon i hit the dashboard or any other url that uses ” wp-admin ” it says its not found ….

chrome is saying its a redirect …

http://www.regatulunit.com redirected you too many times.

i changed the home and site url …

i try to change permalinks in phpmyadmin …

i deleted the .htaccess …tried without and with only original one …

nothing works … looks like there is something in the database thats been changed by a plugin … thats now causing this redirect …

thanks