After reading your thread, had planned on trying ubuntu or another os in the morning to see if the cards would work. We ended up buying a 5th card from another source just to make sure the ones we had weren't dead, all code 10.
Will take a look at event viewer tab tomorrow.
For now I put the centrino n6235 cards back into the laptops. I can probably hold off another week, before having to resolve this issue, then will need to find another card to use. Bosses don't like excuses, they want it to work, and work now.