From last few weeks I came across an joomla error in which the super administrator is not able to login into the joomla administrator panel even though we changed the superadmin password from the phpmyadmin.
Then the problem is some how one of the joomla table is got corrupted from the joomla database.
So we just need to put that table back in the database to get back the login .
Before doing any changes into the site .please backup the database first.
The download the file from here. joomla table And open the phpmyadmin and open the respective database and install the table over there .
After that change the password for superadmin in users table to
” 21232f297a57a5a743894a0e4a801fc3 “ with out inverted commas which Is md5 for admin and bingo you are done.
Let me know if you have some issues
note:this thing will only get the super admin back .you wont get the other users on the site back.i am finding solution for that.