Pb avec wampserver

slt à tous,
j'ai installé wampserver pour y faire du SQL et j'ai rencontré des pb que je ne sais pas résoudre
en fait j'ai suit le tutoriel de ce lien (file:///C:/Users/ben%20khediri%20ramzi/T%C3%A9l%C3%A9chargement/Informatique/Languages%20de%20Programmation/SQL/sites%20web/Installation%20et%20configuration%20de%20Wampserver%20_%20Le%20KoiKonMetO%C3%B9%20de%20l%27informatique.htm) et lorsque je clique sur phpMyAdmin l'interface web permettant de gérer la base ne s'affiche pas comme prévut et il y a un message d'erreur qui dit :
#1045 - Access denied for user 'root'@'localhost' (using password: NO)

voici le log de mySQL il contien les erreurs rencontré :

090228 19:59:16  InnoDB: Started; log sequence number 0 46409
090228 19:59:16 [ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
090228 19:59:16 [ERROR] Incorrect definition of table mysql.event: expected column 'sql_mode' at position 14 to have type set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES','STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES','ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER','HIGH_NOT_PRECEDENCE','NO_ENGINE_SUBSTITUTION','PAD_CHAR_TO_FULL_LENGTH'), found type set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES','IGNORE_SPACE','NOT_USED','ONLY_FULL_GROUP_BY','NO_UNSIGNED_SUBTRACTION','NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB','NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40','ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES','STRICT_ALL_TABLES','NO_Z
090228 19:59:16 [ERROR] Event Scheduler: An error occurred when initializing system tables. Disabling the Event Scheduler.
090228 19:59:16 [Note] wampmysqld: ready for connections.
Version: '5.1.30-community-log'  socket: ''  port: 3308  MySQL Community Server (GPL)

qulequ'un pourrait il me dire ce que ca veut dire?
merci d'avance