Zend Server Installationsfehler

Hallo,

wer kann mir dabei helfen, den Fehler zu behaben?

error:
post_stage.php error:
Warning: mysqli_connect(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: YES) in C:\Program Files\Zend\ZendServer\tmp\zdd\.Xa3136\create_schem a.php on line 7
ERROR: Could not connect: Access denied for user 'root'@'localhost' (using password: YES)