When I came home and used my computer I had noticed that Windows PowerShell was something new on my computer under Accessories. What is it and why was it all of a sudden on my computer? I am not a technical person, so basic language would be great! I just don't know if it was part of an update or what. Under properties of it it shows it was created at 3 in the morning! Any help would be appreciated. Do I have to keep it?