just click end now, but you can go to your run option in the start menu (or press the windows button + R on you keyboard), the run window will open and now type msconfig, another window will then pop up with some tabs at the top of the window, then clcik on the startup tab and turn off and programs that you do not want running in the background when your computer is on, e.g. i turn off Quicktime, Itunes, PowerDVD and things like roxio, just turn off programs that are not important,
REMEMBER though do not turn off more important stuff like you internet protection or any system tools, if your not sure if you should turn it off or not then DONT
hope this works for you