Another Mac Technician having suffered this same problem a coupla' years back;
Otherwise mint-condition MBP 15" 2012's WiFi would occasionally work but was essentially useless. If and when it worked at all, WiFi would never stay connected for more than a few minutes...
wasted time fooling around with software for a while, then replaced the AirPort / Bluetooth card with a brand-new one... still had exactly the same problem... frustrating!!!
Finally replaced the ribbon connector from MLB to Airport Card.
WiFi. now. perfect. FWIW, the failed cable showed NO sign of wear or damage & was probably defective the day it was made.
I have another 2012 MBP 15" waiting on the bench with the same symptoms except this one doesn't detect the WIFI at all but does see Bluetooth... will first try a known-good cable this time.
now where did I stash that Airport Card that I pulled on that last one... ?
Same issue here with my mid 2010 15" MBP. Problem seemed to start shortly after I installed OS X Yosemite. Bluetooth still works (which I strange because they share a card). I also replaced the card, reset SMC and PRAM. Still nothing. Grrrrr. Guess I'll have to take it in.
- de aplinmercer
Did you find a solution for the error? I have the same problem and have tested everything. Also got the problem last summer and have been trying to find a solution.
- de petterwendel
Same problem MacBook Pro 2011. Even replaced Airport Card but no improvement. New airport card work for about 1 week and now I am back to "no hardware installed". 10.11.4 . Also tested 10.10.5 to ensure it wasn't a software problem.
- de justanick
Try replacing the flat airport card cable, it can have issues after some years of use.
- de Monte Ohrt
1¢ solution, take a small ammount of low tack tape, and tape the cable down onto the optical drive. This forces the frayed bits of the cable into alignment completing the circuit.
- de Robert Wiebe
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