Antwoord op "WiFi not working, AirportCard or antenna?"Both are susceptible to failing, have you checked to see if the card/antenna are seated properly? I'd try reseating it, and then see if wifi connects.
Antwoord op "SSD Upgrade "Kit" without regular tools?"You can do this yourself. Prying out the logic board you could figure out without the supplied tool. But you will need the SATA connector.