sevinsound
Level 1 (4 points)
Notebooks

Q: Mac OSX 10.9.1 wifi keeps dropping

I bought my daughter a 2012 (mid) Macbook Pro 13 and it is constantly dropping the wifi signal. Wifi never comes back on after sleep mode and the computer has to be restarted...and half the time it restarts with "wifi - no hardware installed" , in which case it has to be restarted again. I have searched the communities and tried several solutions to no avail and do not know what to do at this point ....any suggestions would be appreciated.

MacBook Pro (13-inch Mid 2009), OS X Mavericks (10.9.1)

Posted on Jan 18, 2014 3:27 PM

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Q: Mac OSX 10.9.1 wifi keeps dropping

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  • by Linc Davis,

    Linc Davis Linc Davis Jan 18, 2014 5:25 PM in response to sevinsound
    Level 10 (208,037 points)
    Applications
    Jan 18, 2014 5:25 PM in response to sevinsound

    Test after taking each of the following steps. Back up all data before making any changes.

    1. Make sure the network is on the preferred list by following these instructions. It's important to read the article carefully, as it's the starting point for any further efforts to solve the problem. If you skip any of the steps, the problem may not be solved. Make sure the box marked Remember networks this computer has joined is checked.

    2. Follow the instructions in this support article under the heading "Symptom: The network connection drops unexpectedly."

    3. Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.

    4. From the Location menu at the top of the Network preference pane, select Edit Locations. A sheet will drop down. Click the plus-sign button to create a new location. Give it any name you want. In the new location, set up the Wi-Fi service with the same settings you used before. Click Apply and test.

    5. Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.

    6. Repair permissions on the startup volume.

    7. Turn off Bluetooth and test.

    8. Reset the System Management Controller.

    9. Reset the PRAM.

    10. Reinstall OS X.

  • by sevinsound,

    sevinsound sevinsound Jan 20, 2014 6:41 AM in response to Linc Davis
    Level 1 (4 points)
    Notebooks
    Jan 20, 2014 6:41 AM in response to Linc Davis

    I spent 10 hours meticulously doing all of these steps and without any incident of dropping the wifi connection. I woke up this morning to turn the computer on and give it to my daughter and now it says " no hardware installed". I have restarted and shut down numerous times and it keeps coming on with the same message .

  • by Linc Davis,

    Linc Davis Linc Davis Jan 20, 2014 9:57 AM in response to sevinsound
    Level 10 (208,037 points)
    Applications
    Jan 20, 2014 9:57 AM in response to sevinsound

    Test after taking each of the following steps that you haven't already taken. Back up all data before making any changes.

    1. If you can connect to the Internet via Ethernet, Bluetooth, or a USB network device, make sure all available OS X updates are installed. If Wi-Fi is your only means of network access, skip this step.

    2. Reset the NVRAM.

    3. Reset the System Management Controller.

    4. Boot into Recovery. In the menu bar of the OS X Utilities screen, there's a Wi-Fi menu. If it works, select Install OS X. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.

    5. Take the machine to an authorized service center for testing.