我试图安装mysql后，我已经有xampp，我改变了密码，现在我得到这个错误，当我试图访问phpmyadmin

Error
MySQL said: Documentation

# 2002 - No connection could be made because the target machine actively refused it.

— The server is not responding (or the local server's socket is not correctly configured).
mysqli_real_connect(): (HY000/2002): No connection could be made because the target machine actively refused it.
Connection for controluser as defined in your configuration failed.
mysqli_real_connect(): (HY000/2002): No connection could be made because the target machine actively refused it.

我尝试了一切，包括更改confing.inc.php中的密码，并尝试从cmd重置密码，当我尝试此操作时，出现以下错误：

MySQL [(none)]> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('');
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'PASSWORD('')' at line 1