usb ports not working

i have a win7 Lenovo g550 , and all of my usb ports are not working please HELP
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  1. Hi :)

    LOOK very closely with a torch at each of them...make sure none are twisted and shorting out...

    All the best Brett :)
  2. hi. Try this program to unconfuse your USB drivers Download the driveclean zip file and follow instructions
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