Reset the Root Password of MySQL Server

Create a text file mysql-init.txt and place the following command within it on a single line: 
SET PASSWORD FOR ‘root’@'localhost’ = PASSWORD(‘MyNewPassword’);

Stop the MySQL server

Windows:
mysqld-nt.exe –defaults-file=....\my.ini –init-file=....\mysql-init.txt

Linux:
mysqld_safe –init-file=~/mysql-init.txt

The contents of the mysql-init.txt are executed at server startup, changing the root password. After the server has started successfully you should delete.

Stop the MySQL server, then restart it in normal mode again