Start Mysql Without Password

Stop Mysql.

Start Mysql with below command 

mysqld_safe --skip-grant-tables &

Loggin into mysql terminal

mysql --user=root mysql

Press enter if asked for password

Update the password

update user set Password=PASSWORD('new_Password') WHERE User='root';

Exit from mysql terminal 

Kill the process started by you

Start mysql through init script and login through your new password.

/etc/init.d/mysql start

 
mysql --user=root mysql -p