" I need the original factory folders again."
I seriously doubt the factory files will help you get your original files back or help your pc or Pioneer see the drive at this point. And if the pc can’t see the drive you won’t be able to reload the original factory files onto it.
BTW I think your original files were the SanDisk SecureAccess system. 3 folders and a couple of files I believe, all of which could have been deleted without reformating. The SecureAccess files can be loaded from SanDisk, try this link: http://kb.sandisk.com/app/answers/detail/a_id/2399/related/1/kw/secureaccess/r_id/101834
But I think you’re going to need to buy a new USB drive to resolve your problems.
Good luck.
