I have a 2gb flash drive that has been a pain since I bought it. It is a Power Up Speeddrive. I have reformated it once and it worked fine for awhile. It's newest trick is that when I plug it in to a computer (I have tried a number of them) the drive letter flashes and is not properly recognized. Since the computer does not regonize the drive, I cannot access it to reformat it or determine what is on the drive - if anything. Any suggestions for getting the drive to cooperate and allowing the computer to recognize the drive?