How to enable and disable a USB port in Windows7

How to enable and disable a USB port of your Laptop or desktop?

  • Windows 7 press Windows key+R and type as regedit
  • In Windows XP or Earlier versions Start->Run then type “regedit”
  • The Registry Editor will open
  • In the left column following the tree structure like Windows Explorer goto:
    HKEY_LOCAL_MACHINE => SYSTEM => CurrentControlSet => Services => USBSTOR
  • In the right pane of USBSTOR some list will be shown.
  • Right click on the item of name START
  • Select MODIFY
  • A new window will pop up and you will see VALUE NAME : Start and Value Data is : 3
  • To disable USB ports: change the Value for “3″ to “4″ and to enable USB ports: change the value from “4” to “3”

Dont forget to check your USB devices whether working or not..

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