Hello,
# Download
USB Fix
] on your computer, and launch it.
# It will start automatically, and a shortcut will be created on your desktop.
# Connect all your external data sources to your PC (Usb keys, external drives, etc...) Do not open them.
# Choose " Deletion " option.
#The computer will re-start, and it may be longer than usually.
# UsbFix will display a message at re-start.
# Click "OK" to start cleaning.
# Copy/paste the report here.
Tutorial :
http://www.en.usbfix.net/2014/02/usbfix-tutorial-clean-option/