Que drive no longer recognized

verify that the USB port is working, you may also try it on another machine to see if it works, you may have a corrupt driver for your usb port. If it works on another machine then uninstall and reinstall updated drivers for your usb ports. I hope this helps, Good luck.

Did you installed or updated anything lately? Which OS are you using? Vista, XP, etc? anyhow go to your device manager and delete your USB drivers and shutdown your computer and start again and that will allow your computer to read again and install all the drivers that you need only. Just in the event that did not work make a copy of your old driver and keep it on folder that you know to get to it. let me know if that work and please remmber to rate my service so I am able to contenue provide quality service and improve on it with your help. God bless