This is a question that gets asked many, many times: how do I stop Messenger at startup? The first few times that Messenger starts up automatically and you have to close down the window might not annoy you but after the hundredth time, most people start to get a little shirty.
Automatic startup of Messenger is supposed to be a convenience for you, so that it’s already running when you need it and so that you don’t need to waste time searching for it to start it manually. But if you find that after most reboots you just close it down anyway, it may be time to remove Messenger from startup. Even if you are not using it, it is still using up some of your computer’s resources.
There are two ways of removing Messenger from startup.
You are then prompted to restart your computer for the changes to take effect, Go on, do it, and then you can see whether it worked.
The msconfig method is useful for removing other annoying programs that start automatically when you turn your computer on.