Consider downloading process explorer to see what is running for free
You can kill unwanted processes one by one
Process Explorer
Copyright © 1996-2007 Mark Russinovich
Sysinternals -
www.sysinternals.com Process Explorer is an advanced process management utility that picks up where Task Manager leaves off. It will show you detailed information about a process including its icon, command-line, full image path, memory statistics, user account, security attributes, and more. When you zoom in on a particular process you can list the DLLs it has loaded or the operating system resource handles it has open. A search capability enables you to track down a process that has a resource opened, such as a file, directory or Registry key, or to view the list of processes that have a DLL loaded.