If you are trying to track down why your computer is running so slooowwwly, try using this simple DOS command from Digital Inspiration to uncover a possible problem:

  • Type cmd in your Windows Run box.
  • Type “netstat -b 5 > activity.txt” and press enter.
  • After say 2 minutes, press Ctrl+C.
  • Type “activity.txt” on the command line to open the log file in notepad (or your default text editor)

Or
Use TCP View from SysInternals

As found on LifeHacker:
http://…/find-out-your-computer-is-secretly-connecting-to-the-web

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  6. Windows PowerShell
  7. Computer Repair Utility Kit runs on a USB drive