The server when running, does not show up in the task manger. Also simply ending the task would not help much at all, seeing as how as soon as you restart your computer it will be ran again. But like i was saying, but cut myself off.
Find the server on your drive, after taking it out of your start up. Then delete it. Or you if you can somehow end the task, you COULD delete it then, with out restarting and messing with msconfig.