Hi there, sounds like a hardware failure. If you check in the Device Manager does the card or anything like it show up?. If not for some reason the system cannot see the card, you would need to check the card has not come out of the mini PCI slot. If it is under warrantee you may not want to open the back and just call your supplier. If it is out of warrantee the mini PCI cards are quite easy to replace and are not too expensive either.
Good luck
Dale