Hello, I'm Jewel with Kingston Technical Support. We apologize for the issue experienced with our USB drive. The behavior described would indicate that the drive has failed. If you check in Disk Management the drive may be listed with "No Media", if it is listed otherwise it may be possible to 'clean' and format the drive using diskpart in Windows command line. We stand by all our products and can replace the drive under it's warranty. Please call us at 1-800-435-0640 (USA and Canada only) M - F 6am - 6pm PT and I or another available Technician will assist you.
Thank you for selecting Kingston as your upgrade partner.