The drive is broken, return it. Return it to the place where you bought it or to SanDisk directly.
http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process
The drive is broken, return it. Return it to the place where you bought it or to SanDisk directly.
http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process