Via Task Manager

  
 
 
 
 
 press Ctrl+Shift+Esc. 
 
 
 or 
 
 
 
 
 Open the Task Manager by right-clicking on the taskbar and selecting "Task Manager"  
 
 
 
 
 
 
 Click on the "Startup" tab to see a list of programs that start automatically with Windows. 
 
 
 Disable the ones you don't need by right-clicking on them and selecting "Disable".  
 
 
  this one is only a small potion of the auto start up tasks and may no longer work on newer windows versions