WIFI not working at all???? HELP PLEASE :)

Hi, I am having problems with my Macbook A1342, My airport(wifi) card is not working?

I have tried everything I know! I cant see anything about wifi in my system pref> network.

The only thing I can see is the Ethernet, Bluetooth and a few other random internet devices. I dont have the Wifi icon in the top right hand corner either.

I am currently onnected through Ethernet cable But as you can imagine I want to use my WIFI instead! 🙂

Any suggestions? 🙂