So I have a 128GB flash drive that I bought on eBay a while ago that is no longer working. It had been working fine in both Mac OS and Windows, however it will no longer show up in Finder or Disk Utility. It does, however show up in USB Prober and System Profiler. In Windows, it won't show up but sounds are emitted when I pull it out or plug it in. Of interest, it is a Kingston drive but System Profiler lists the manufacturer as Alcor Micro. Any ideas how I can get the drive to work? Thanks.