Cannot load homepage - Error


I am a total newbie to this stuff but long story short this is my error message:

SQLSTATE[HY000] [1045] Access denied for user 'i2225950_conc1'@'localhost' (using password: YES)

A little background I made this website playing with Concrete5 roughly a year ago and it looked pretty good for a business startup venture I had hoped to go after. I didn't end up doing it so I had chosen to move the index.php file to my temporary folder that way I got the index.html godaddy genaric "something is coming" page when someone visited my site. All I did today was go and move the Index.php back to my public_html folder in File Manager thinking all would be good and I'm getting this error. I have ZERO MySQL experience but I consider myself a quick learner. Is there anyone willing to give helping me figure this out a crack? I would really appreciate any help you could offer.

View Replies:
Mnkras replied on at Permalink Reply
Access denied for user 'i2225950_conc1'@'localhost'

The mysql information you have specified in the config is not correct. Update the user/password in the config
etoolingsolutions replied on at Permalink Reply
Thank you for your reply. That is what it would appear but I am such a newbie to this how has my username or password changed if I had not done so? All I did was move this file out of the public_html directory and then move it back. Is there a way for me to go change my credentials at this point? Sorry for the baby steps, again I know nothing about mySQL
etoolingsolutions replied on at Permalink Reply
Update - So I did find the file is /application/config/database.php and the username and password in there does not match what I see as the sole username in my phpMyAdmin table. I updated the database.php file to reflect the correct username and password but get the same error with a different username shown obviously. Does anyone have any other ideas that may help? I'm still not really understanding how this happened in the first place as the site worked fine before! I really don't want to start from scratch I have so much time into this initially and I've had to learn as I go.