I bought this on Amazon 3 Nov 2012 and it has been working fine. Today though I noticed the indicator light wasn’t on and when I checked further the drive it’s plugged into shows nothing there. I removed the SanDisk and tried it in other usb drives on this and another laptop but no indicator light and no drive/files shown. I also tried another flash drive (not Sandisk) and this worked fine on both laptops.
What has happened and what can I do? I’ve been googling and I have a horrible feeling all my data is lost. 
If that’s the case how do I get a refund or replacement?
Thanks in advance.
