昨天我用phpmyadmin还好好的,今天不知是怎么回事,输入http://localhost/phpmyadmin/index.php后出现了如下所示:

Warning: MySQL Connection Failed: Access denied for user: 'root@localhost' (Using password: NO) in C:\apache\htdocs\phpmyadmin\lib.inc.php on line 255
Error
MySQL said:
Back

C:\apache\htdocs\phpmyadmin\lib.inc.php on line 255所在行是如下所示:

$link = $connect_func($cfgServer['host'], $cfgServer['user'], $cfgServer['password']) or mysql_die();

请问这是怎么回事呀,能不能解决呀??
非常感谢!!!!!!!!!!!!!!!!!