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Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB GDDR5 Video RAM

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Wifi keeps turning off and not turning back on

The wifi keeps turning off and will not let me turn it back on. After restarting, it will work again for a time, but the problem returns. I reset the SMC and PRAM, but the issue remains. Wondering if anyone has another solution before trying to replace the cable and/or board.

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Have you tried running the onboard diagnostics to see if something pops?

Restart your system and press the D key some versions of system firmware breaks the diagnostics so it might not work.

Reference: Mac startup key combinations

If it fails you really have no choice than to try reseating the cable following this guide MacBook Pro 15" Unibody Mid 2012 AirPort/Bluetooth Cable Replacement

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Ulises Lima crwdns2934231:0crwdne2934231:0
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