
may I ask which Joomla! version you are using?
THE FOLLOWING WAY MAY WORK FOR JOOMLA 1.0.1x
I assume that your user with the ID 62 is deleted. Try:
INSERT INTO `jos_users` (`id`, `name`, `username`, `email`, `password`, `usertype`, `block`, `sendEmail`, `gid`, `registerDate`, `lastvisitDate`, `activation`, `params`) VALUES
(62, 'Your Name', 'admin', '
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', '', 'Super Administrator', 0, 0, 25, '2005-10-28 14:13:40', '2008-09-05 09:10:58', '', '' );
(this is just a modified export of my database; you may want to replace "Your Name" with your name, "admin" with the desired username of the Superadmin, and "
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" with your email address)
This SQL code should insert a new user with the ID 62 into your database table
Then, I found an article on how to reset your Super Admin's password. The described method will reset the password for user ID 62:
joomlatp.com/joomla-template-Tutorials/R...trator-Password.html
After that you should go to the user settings and chose a more secure password.
Good luck!