Problems with arduino uno R3

Bought an arduino starter kit here the other day, had great fun with it coding and plugging. Today it just stopped communicating with my laptop, and all other laptops... when i plug it in it just says unknown device and that it might have an fault. device manager says "windows have stopped this unit because it has repported an error, code 43". I've tried googling but i coudnt find any help on those.

Code 43 is a common windows error and there are many hits on google for it and quite a few using the forum search too.

Would be nice to have some detailed info so am going to point you to this thread first so that when you come back you can add further relevant info.