Hello,
in that case the drive is defective and needs to be replaced, so you can replace it with the place of purchase or with sandisk direct under this link
http://kb.sandisk.com/app/rmaform/session/L3RpbWUvMTQ0NDYzNjM4OS9zaWQvSVRpV0RLeW0%3D
Hello,
in that case the drive is defective and needs to be replaced, so you can replace it with the place of purchase or with sandisk direct under this link
http://kb.sandisk.com/app/rmaform/session/L3RpbWUvMTQ0NDYzNjM4OS9zaWQvSVRpV0RLeW0%3D