Why 2009 MacBook says "no hardware installed for wifi" after the update to El Capitan?

I just updated today and after that he finished the wifi icon had the message "no hardware installed" I checked a few other places to see what I could do and I tried to reset the SMC two-way and the NVRAM and does not always help. I also tried to make the miracle of the network solution, but it doesn't even have a wifi network option. Please help, I need to use my laptop for school work on very bad Internet.

A few things to try...

http://osxdaily.com/2015/10/16/fix-Wi-Fi-problems-Mac-OS-x-El-Capitan/

Tags: Mac OS & System Software

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