Lugie2
Level 1 (0 points)

Q: Question about wifi

After upgrading my macbook pro to Yosemite, my wifi quit working- I get a "hardware not installed" message. I've powered down and all the first check stuff, restarted the router, etc- still nothing. Other devices have no trouble connecting, so it's not the router. Internet works if the machine is directly connected, but I can't travel with that! Please advise.

MacBook Pro (15-inch Mid 2012), Mac OS X (10.0.x), Was working just fine yesterday...

Posted on Oct 20, 2014 7:52 PM

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Lugie2

Q: Question about wifi

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  • by Carolyn Samit,

    Carolyn Samit Carolyn Samit Oct 20, 2014 10:30 PM in response to Lugie2
    Level 10 (124,814 points)
    Apple Music
    Oct 20, 2014 10:30 PM in response to Lugie2

    Hi ..

     

    Might be corrupted network preferences as a result of the upgrade.


     

    Open the Finder. From the Finder menu bar click Go > Go to Folder

     

    Type or copy paste the following:

     

    /Library/Preferences/SystemConfiguration

     

    Click Go then move all the files in the SystemConfiguration folder to the Trash.

     

    Restart your Mac then monitor Wi-Fi.

     

     

    Your Mac will generate a new SystemConfiguration folder for you.

     

    If that doesn’t help, try here >  Wi-Fi: How to troubleshoot Wi-Fi connectivity