Access denied for user ''@'localhost' (using password: NO) (#1045) - contact hosting provider for assistance.
Using Jamroom
Sounds like you might have messed up the config.php file when editing it - that error means JR cannot connect to the MySQL database. The info is stored in the config.php file as well, so you like introduced an error in the file. Remove what you added and it should come back. After you have done that, log in and use the Core -> Tools -> Advanced Config option to add/remove items in the config.php file - there is no need to edit it by hand.
