Help me because Em bó tay :((

Chủ toppic cho Em hỏi xí, Em làm như hướng dẫn nhưng đến bước 2 báo lỗi thế này có nghĩa là sao vậy Anh ::(

Attempting to attach to database

Error description: mysql_connect() [function.mysql-connect]: Access denied for user 'mp_541135'@'localhost' (using password: YES) /home/vol3/myplace.us/baojoembik/www/mp_541135_diendan/includes/class_core.php on line 273

The database has failed to connect because you do not have permission to connect to the server. Please confirm the values entered in the 'includes/config.php' file.