[SOLVED] First login user and Passwor

Hi.
Sorry for delay. I was sick for couple of days. Well, I just opened the folder called "db". I could find the related SQL file which was called projeqtor_V5.1.5.sql. As SQL is not installed on my laptop, i didnt have related software to open it. Then, i just opened it by using Notepad. Here is the text:
-- ///////////////////////////////////////////////////////////
-- // PROJECTOR //
-- //

---

//
-- // Version : 5.1.5 //
-- // Date : 2015-12-09 //
-- ///////////////////////////////////////////////////////////

ALTER TABLE `${prefix}quotation` CHANGE `untaxedAmount` `untaxedAmount` DECIMAL(11,2);

ALTER TABLE `${prefix}command` CHANGE `untaxedAmount` `untaxedAmount` DECIMAL(11,2),
CHANGE `addUntaxedAmount` `addUntaxedAmount` DECIMAL(11,2),
CHANGE `totalUntaxedAmount` `totalUntaxedAmount` DECIMAL(11,2);

---

I just use Xampp which i think can open the related SQL files. I also opened the above mentioned Log file. Here is the containment.
2015-12-25 07:00:57.889 ===== TRACE ===== Login error for user 'admin'
Is the problem related to installing SQL? I appreciate to know your idea.
Thanks