How to disable starting MySQL service on Windows7 startup?

In Control panel open Administrative tools then double click Services. Scroll down to MySQL and double click to open the properties. Change the Startup type to Manual.

You can disable MySQL service from the Command Line (make sure you Run it as Administrator).

To disable service start on Windows startup (this will not stop the service if it is currently running):

sc config mysql start = manual

To stop the service:

net stop mysql