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  1. I have an old iMac (10,1) on El Capitan that lost a formerly working WiFi connection out of the blue about a year ago. Ethernet works and Safe Mode wireless works. But I did everything to include changing locations, trying it through a guest account, removing antivirus, reinstalling the OS and still no joy. The WiFi interface is detected on another partition running a different OS but on this OS I can’t upgrade any further due to hardware age. Weird thing is, after I reinstalled the OS now I can’t get the PRAM to reset for the life of me. It refuses to chime and just goes straight to booting up. I have tried a different keyboard to the same result. I also tried resetting the SMU 2x but not sure if that worked. What does it mean when my WiFi interface cannot be turned on, even in the terminal, and I can’t zap the PRAM?

  2. Hi , my wifi is disabled and i can’t turn it on. Sometimes i restart my mac and wifi is enabled but sometime time later it’s disabled by himself and i have to restart or turn off the computer

  3. My MacBook does not give a WiFi option on the interface drop-down as many others have stated (only thunderbolt, Bluetooth, VPN, PPPoE, and 6to4) So now I’m also stuck in this process. Has anyone solved this? I have no idea how to continue.Thanks in advance for any advice.

  4. As everyone else has stated my MacBook does not give a WiFi option on the interface drop-down. Only thunderbolt, Bluetooth, VPN, PPPoE, and 6to4. Can you please let us know what to do now that we are stuck without WiFi in the list. Thank you.

      1. I’m having the same issue – please elaborate on how I can rectify this issue? I’m now stuck with no wifi

          1. I’m having the same issue, i can’t re-add the WiFi service because it doesn’t appear on the interface list

  5. Hi! I got to Step 5, but when I went to select the interface and add Wi-Fi back, it did not appear as an option; only Thunderbolt Bridge, Thunderbolt 1, Bluetooth PAN, VPN, PPPoE, and 6to4. Can anyone provide some guidance?

  6. GRACIAS! Llegué a pensar que era daño de hardware, pero con el paso 2 PRAM me funcionó, ya había hecho los otros pasos incluido ese, sin embargo la clave estuvo en hacerlo más de 20 segundos.

  7. I got all the way through to the end of option 4 but my MacBook does not give a WiFi option on the interface drop down. Only thunderbolt, Bluetooth, VPN, PPPoE, and 6to4.

  8. Hello, I was just wonder for #2 do you hold until the log in page or the Apple sign and loading bar?

    Cheers Sophie

  9. Thank you SO much for this! I thought using my iMac again for anything useful was helpless but #2 did the trick.

  10. What excellent and detailed instructions. The wi-fi icon has disappeared completely so I went straight to option 6 and followed instructions. To my surprise the current network status is showing as connected. I think this needs a bit of fiddling to find the “lost” icon which I am not competent to do.

  11. I went down the list and option 4 was the fix!! Thank you very much for taking the time to provide this information! Saved me a lot of time, headache, and money!!

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