Hi,
I have tried everything to resolve this by searching these forums.
I can no longer login to my websites admin panel.

Any help?

Regards

Is this the SilverStripe admin panel as the following post gives advice on setting a default username/password vi _config.php

http://www.silverstripe.org/general-questions/show/5304

Or you could try adding this into your _config.php for a default username/password then modify the password for your login via security.
But do remember to remove it after as it is a security risk

define('SS_DEFAULT_ADMIN_USERNAME', 'admin');
define('SS_DEFAULT_ADMIN_PASSWORD', 'password');