What's wrong with my flash drive?

I recently bought a 4GB Ativa flash drive, for a computer class at school. I’ve been using it for the last week and it’s worked perfectly, until now.

It’s really all-of-a-sudden. Earlier this morning it was working fine as well, but now, when I plug it into my MacBook, it doesn’t light up or anything. I’ve tried it in my Dad’s Dell laptop and it gives me the “USB Device Not Recognized” bubble.

Is there any way I can salvage the drive, or at least the things I had saved on it?