Chosen Solution
I have recently upgraded my keyboard by doing the following this tutorial: Upgrading your 2.0 GHz 13" Aluminum Unibody MacBook to a Backlit Keyboard The new keyboard is well installed, but I have now the following messages regarding the wifi and the bluetooth: “Wi-Fi: No hardware installed”; “Bluetooth Not Available”. Did I damage one specific cable? Which one? Or did I damage the airport card? Or it is something else? I have also tried to reset NVRAM and SMC but it did not work. Thank you in advance,
Review this IFIXIT guide: MacBook Unibody Model A1278 AirPort Card Replacement. Jump to Step9 this is the Airport data cable from the Airport card held in the clutch cover. You may have not seated the connector or you have damaged the cable.
