Try pressing Ctrl-Alt-Delete simultaneously and open up the Task Manager. Go to the process menu and close those processes that may be stealing your valuable bandwidth. (NOTE: Closing processes with unknown filenames may cause known programs to not function properly). There is a column with the User Name, and if that is "System", you'd better leave it alone until you stop using the program that needs it. But if the User is your own login name, then it is not crucial to the operating system, but may be needed by other programs, however you may experiment. Often the system will not allow closing of -- or will reopen -- needed system programs.