Microsoft SysInternals - (Free)
Autoruns is a handy tool that helps to control the applications that are launching at Windows startup.
Autoruns is a very useful software that is developed to offer the user control over all the applications that launch at startup of Windows and whether or not to launch. It shows a list of all the programs that are configured to run at computer startup (bootup process) or identification (login), having the option to "hide" the programs that are part of Windows.
Autoruns can also identify the programs initiated by other users.
The interface displays each type of service or application by clicking on the corresponding tab (DLL , services, jobs programmed) or display all through the "All" tab. To disable a software or service, simply uncheck the box.