I've had this memory stick a few years and use it occasionally to back up business files. It has not been physically damaged and I've never had a problem. Now, no matter what machine I plug it into, 2 desktops, my laptop, I get the "device not recognized" message with a code 43 designation. The boys at Staples checked it on their "sophisticated software" and feel it's probably just a shot piece of hardware. I don't know how they come to that conclusion. They claim I could send it out to a company and for about $250 they might be able to retrieve the data. I don't think so....... Any ideas?