Sometimes a wonderfully smart USB drive will become corrupt owing to invalid information within the Master Boot Record (MBR) or Partition Boot Record (PBR) or directory structure on the USB drive itself. Once this went on, and you then insert the USB drive into a USB port of your Windows laptop, Windows or a utility like RMPrepUSB might become unresponsive once accessing that device. If this happens there's NO ought to THROW THE USB turn back - you'll be able to FIX IT!