Upgrading from 3.8.0 to 3.8.4 level 2. database error!

[j-bo]

This is my 1st upgrade and I have an issue now.

Upgrading from 3.8.0 to 3.8.4 patch level 2.

I changed the folder name from "upload" to "forums".

I took out the "install/install.php" file as instructed before uploading.

After uploading all files, I renamed the existing config.php to config.php.old and renamed the new config.php.new to config.php.

I then opened that file in a text editor, although the instructions didn't say why.

I then went to the next step and did the: http://www.example.com/forum/install/upgrade.php

However, once I did that, I immediately got the below data base error.

SO....now I'm stuck and don't know what to do to get this operational. I didn't get to the log in screen. I'm assuming I need to change some type of permissions/user to the mysql database?

Help please!
_________

Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Access denied for user 'root'@'localhost' (using password: NO)
/home/motosout/public_html/forums/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Monday, December 31st 2012 @ 03:03:48 PM
Error Date : Monday, December 31st 2012 @ 03:03:48 PM
Script : http://www.motosouth.com/forums/install/upgrade.php
Referrer :
IP Address : 98.181.43.38
Username :
Classname : vb_database
MySQL Version :

[AliMadkour]

Check your configuration on includes/config.php file?
you can use your old config.php file with 3.8.4

[j-bo]

Thank you. You're a genius!

I see now why I needed to open up that config.php file. So I could put in my old information!!

Many thanks, all is updated now.