“how can I solve this problem to use the flash drive normally? HELP!!!”
You can’t, the drive is broken and needs to be replaced. Copy the files that you want to save to your pc’s hard drive then return the Cruzer to either where you bought it or to SanDisk.
To return it to SanDisk review this link:
http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process
