Can't Login to Admin

You can restore admin password by execution this query in your DB management system like phpMyAdmin:

TRUNCATE TABLE `Admins`;
INSERT INTO `Admins` VALUES ( 'admin', md5('dolphin'));

In this case your admin login will be admin and password - dolphin.

Are You logging into www.yourdolphin.com/admin/? Check your SQL for the Admin information to ensure your inputting the right information.

Hey man, I tried this and it didn't work. can you please help me.?

Is there a simple way to retrieve a lost password or reset it?

Here is an easy fix....Go to you database (phpmyadmin)
select your database, and then find the table that is on the left of the database main properties panel view, select the Admin table, and view it in the main properties panel....select browse....you are most likely going to see something that looks like this in
a box on the bottom....Name....ADMIN_MAIN
Password !@29213)(&^^(*& ....not the actual.
select the name field, and then select your pencil,
and from there you enter in your new name...in the value field...(SMALL CAPS ONLY) in the place of ADMIN_MAIN
then in SMALL CAPS ONLY you do the same for your password....after all of that is finished....stay in the password field only, and select function, and select MD5, and your done...don't worry about seeing your password go back to all scribbles, that is a normal function of MD5.
I hope that helps