MacBook Air WiFi: No hardware installed

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Level 1

12 points

MacBook Air WiFi: No hardware installed

2012ish MacBook Air that has intermittent WiFi access - also is missing Serial Number "Unavailable" in about this Mac working on OS X Yosemite V 10.10.5

I found talk about both these issues. Have tried all suggestions. The Apple Store would be the next step but too far away to bring computer in.

So far...

1. Reset NVRAM

2. Reset SMV

3. Attempted Safe Mode boot

4. Changed setting in Energy Saver preference pane.

5. Scan disk for errors... nothing works.

Even when in safe mode same issue. It is not recognizing a Network other than Bluetooth and the router is not Bluetooth compatible.

Any NEW fix? I have deleted the network attempted to rebuild WiFi but only Bluetooth available. Thoughts?

iMac, OS X El Capitan (10.11.3)

Posted on Feb 25, 2016 12:02 PM

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Answer 1

Tesserax

Level 10

158,532 points

Feb 25, 2016 12:12 PM in response to AkPaparazzi

Sounds like the built-in Wi-Fi is either faulty or not being recognized by OS X.

If you haven't already, have you run an Apple Diagnostics hardware test?

... since your MacBook Air is pre-2013, you may need to run the Apple Hardware Test instead.

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Answer 2

AkPaparazzi Author

Level 1

12 points

Feb 25, 2016 1:05 PM in response to Tesserax

Yes, however, I could not get the Diagnostics test to engage. Tried just holding the D key also option D neither worked. Am I missing something?

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Answer 3

Tesserax

Level 10

158,532 points

Feb 25, 2016 2:17 PM in response to AkPaparazzi

The proper method is to hold down the "D" key BEFORE the gray screen appears after powering-down/starting-up the Mac. You may have to try this a few times to catch it at the right time. If you still cannot get into the hardware test, then your Mac will need to be brought in. Sorry.

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