error connecting to mysql with v2.1.2

[eluser]jayreis[/eluser]
I am new to using CI and just downloaded v2.1.2
I created a new database and setup the needed tables in my myphpadmin
I then edited the file application/config/database.php to have my database name and connection information
I then edited the autoload php file to have a line that looks like this

$autoload['libraries'] = array('database');

I then am following the video tutorial on making a demo blog from the video tutorial on this website. However when I try to go to what would be the demo page I just get a Error establishing a database connection error and I am not sure why?

Suggestions on where to look to fix this?