Have you tried looking for a manufacturer's driver for the device? You mentioned it had been awhile since you used the device and you'd reinstalled... but then if it's happening across multiple systems that'd be a bit odd.

If the data isn't so critical that you'd pay to get it back I'd still be in favor of cracking her open and having a look... but I'm one of those people that can't help taking everything apart. You might just see an obvious spot where a little solder could save you some money.