回答“Why Airport still has no functionality?”After making the same mistake as Sinfin i ended up without wifi. Initially the computer turned on when i plugged the power cord and every time i tried to shut down he would start up again. After plugging the wifi cable correctly it stopped doing that. Is there no way to diagnose if the logic board is damaged or not? Besides buying a new wifi card... :-| Update: The solution i found was this usb wifi card: http://www.belkin.com/us/F7D2102-Belkin/p/P-F7D2102 With this drivers: http://www.realtek.com/downloads/downloa... I'm using LION 10.7.5 and works like a charm. No issues at all, installed the drivers plug the card and in seconds had wireless internet AGAIN after so many months :-D.