วิธีแก้ 1045 access denied for user root localhost using password no

วิธีแก้ ERROR 1045 mysqli_real_connect(): (HY000/1045): Access denied for user ‘root’@’localhost’ (using password: NO)

phpMyAdmin MySQL
Cannot connect: invalid settings.

mysqli_real_connect(): (HY000/1045): Access denied for user ‘root’@’localhost’ (using password: NO)