airport extreme card won't connect to internet. Says cable unplugged.

I have an aiport extreme card in my emac. It was installed around a year and a half ago and has workd fine until yesterday. it suddenly says that it is not configured. It also says the antenna cable is unplugged and that it is turned off. I tried to trouble shoot it with internet connection assistant which says cable is unplugged and aiport is off. I have taken the card out and reinstalled it and reattached the cable mutiple times to no avail. And yes, I know how hard it is to push in. Any ideas? Thanks. Shannon