C:Program FilesMySQLMySQL Server 5.6bin>
C:Program FilesMySQLMySQL Server 5.6bin>mysqld-nt
'mysqld-nt' is not recognized as an internal or external command,
operable program or batch file.

UPDATE mysql.user SET Password = PASSWORD('SenhaNova') WHERE User = 'root';

FLUSH PRIVILEGES;

mysqld -nt --init-file="C:\Caminho\Do\Arquivo\mysql-init.txt"