MySQL5.1 how to forget the root password

The password is incorrect when I log on to MySQL Query Browser today. It is strange that I always use a blank password or a specific password.

Failed to try multiple times! No matter what the problem is, just forget the password.

Create pwdhf.txt in the installation directory of MySQL, and enter the text: set password for 'root' @ 'localhost' = PASSWORD ('*****');

The red part shows the new password to be set.

Use windows service management tools or task manager to stop the MySQL service (task manager K drops the mysqld-nt process)

Doscommand prompt to the bin directory under the MySQL installation directory, for example, my directory is D: \ Program Files \ MySQL Server 5.1 \ bin

Then run: mysqld-nt -- init-file = ../pwdhf.txt

After the execution is complete, stop the MySQL database service (Job Manager K drops the mysqld-nt process), and then start MYSQL again in normal mode.