WIFI: No Hardware Installed

I get a no hardware installed and grayed out WiFi symbol with an X in it at the top of my display. All red dots in the network preferences for Bluetooth PAN, Wi-Fi and Thunderbolt Bridge. No AirPort listed. I had been watching streaming video and closed the lid. When I came back later, NO WIFI capability.

I have reseated the AirPort Card. Found one of the three wires that come off of the card and are stripped of their plastic coating and joined together at where the hinge attaches…one of them was loose. Rejoined them but no change.

I can still connect to blue tooth devices, even though it says Blue Tooth PAN is not connected in the NetWork preferences.

Is it the AirPort Card? I mean, all I did was close the lid!!!