Hi SaiVal,
_ Dear member of SanDisk Community, welcome. _
I apologize for the delay, in answer you, I hope, be of equal useful.
What happened, is that your message, is lost in another thread, on another subject, and I saw it casually, and caught my attention.
1- I assume, of course, that already revised drivers, and tested the UFD, in other PCs.
The simplest solution is to return it, you have a guarantee:Â http://www.sandisk.com/about-sandisk/contact-us/
2- Meanwhile, you can investigate, whether any of these portable utilities (free), can detect your UFD:
  -  USB Flash Format (HP) 2.23
   - USB Flash Repair (LLF) 2.91
   - USB Flash Fbinst Tool 1.60
   - USB Flash BootICE 1.32
For no lose more time, you can download (free) from here: http://filecloud.io/_cpweb34i
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Luck, and then you tell us, what happened, please.
Regards, Alfred.                                   (Google translated)
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