Problem with database!

PDOException: SQLSTATE[HY000] [1045] Access denied for user 'u1664_dA0cLSraEF'@'s1.usp.ro' (using password: YES) in /home/usp/web/server.usp.ro/public_html/class/database.php:8
Stack trace:
#0 /home/usp/web/server.usp.ro/public_html/class/database.php(8): PDO->__construct()
#1 /home/usp/web/server.usp.ro/public_html/index.php(7): DataBase->__construct()
#2 {main}