'My computer's on win 7 startup

Every time I start windows 7, 4 My computer windows pop up for no reason. I just close them and then all is ok. It's a bit annoying and very weird. What do I need to do to get rid of them? What may have caused this?

Hello, rinu. Try this tutorial:
http://www.sevenforums.com/tutorials/1401-startup-programs-change.html

Thanks but it hasn't worked. I've deleted absolutely everything from all startups using all possible and impossible methods but still they come. Now, instead of 4 windows, only 2 My computer windows pop up when starting windows. It's not possible to get rid of them by deleting something from startup. They're hidden somewhere.