New
#50
Dave,
On the USB that doesn't work, try:
run Diskpart from an elevated command prompt
issue following commands:
List disk which will list the disks detected
Select Disk 2 ( or whatever number is the number of your USB stick)
Detail Disk (to verify that you got the correct disk)
CLEAN ALL ( this will write zeros to each and every byte of the usb stick)
Format FS=ntfs ( this will format the usb stick)
EXIT ( to exit from DiskPart)
Exit ( to exit from the command shell)
Now if that usb stick doesn't work it is defective.