Mario Lordeiro

Q: Wi-Fi: No Hardware Installed

Suddenly my Wi-Fi stopped and shows this at the  Menu Bar:  Wi-Fi: No Hardware Installed

What can I do?

Thanks for any help

 

Mario Lordeiro

MacBook Pro, OS X Yosemite (10.10.2), Apple LED Cinema Display, Blue-Ray Disk, Wacom Tablet

Posted on Feb 16, 2015 7:40 AM

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Q: Wi-Fi: No Hardware Installed

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  • by John Galt,

    John Galt John Galt Feb 16, 2015 7:53 AM in response to Mario Lordeiro
    Level 8 (49,110 points)
    Mac OS X
    Feb 16, 2015 7:53 AM in response to Mario Lordeiro

    Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support

     

    Before Resetting the SMC

     

    Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.

     

    1. Press Command + Option + Escape to force quit any application that is not responding.
    2. Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosing Sleep. Wake the computer after it has gone to sleep.
    3. Restart your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.
    4. Shut down your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.

     

    Resetting the SMC on portables with a battery you should not remove on your own

     

    1. Shut down the computer.
    2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it's not already connected.
    3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time. The power adapter indicator light may cycle off / on once.
    4. Release all the keys and the power button at the same time.
    5. Press the power button to turn on the computer.

     

    If that does not resolve the problem, continue with the following:

     

    NVRAM reset:

     

    1. Shut down your Mac.
    2. Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    3. Turn on the computer.
    4. Press and hold the Command-Option-P-R keys before the gray screen appears.
    5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    6. Release the keys.

     

    After resetting NVRAM or PRAM, you may need to reconfigure your settings for speaker volume, screen resolution, startup disk selection, and time zone information. If issues persist, your Mac's logic board battery (not a portable Mac's rechargeable battery) may need to be replaced. The logic board battery helps retain NVRAM/PRAM settings when your computer is shut down. You can take your Mac to a Mac Genius or Apple Authorized Service Provider to replace the battery on the logic board.

  • by Eric Root,Helpful

    Eric Root Eric Root Feb 16, 2015 12:49 PM in response to Mario Lordeiro
    Level 9 (71,294 points)
    iTunes
    Feb 16, 2015 12:49 PM in response to Mario Lordeiro

    If John's post doesn't work, select the  menu while holding down the option/alt key and run System Information to see if the card is listed there.

  • by Mario Lordeiro,

    Mario Lordeiro Mario Lordeiro Feb 16, 2015 1:01 PM in response to Eric Root
    Level 2 (173 points)
    Desktops
    Feb 16, 2015 1:01 PM in response to Eric Root

    Eric,

    John's post didn't work.

    I held down the option/alt key and selected  menu and yes, the card is listed there.

    Thanks for helping me with this issue.

  • by Eric Root,Helpful

    Eric Root Eric Root Feb 16, 2015 2:21 PM in response to Mario Lordeiro
    Level 9 (71,294 points)
    iTunes
    Feb 16, 2015 2:21 PM in response to Mario Lordeiro

    You are welcome. It sounds like a connection isn't working properly. Unless you are comfortable checking connections, take it in for testing.

     

    If you live near an Apple Store, make a Genius Bar appointment to have the computer tested. Supposedly there is no charge for testing. Use 2nd link if not near an Apple Store or aren’t in the US.       Hardware Repair - Keeping Confidential Data Safe

     

    Genius Bar Reservation US

     

    Authorized Service Provider

  • by John Galt,

    John Galt John Galt Feb 16, 2015 6:01 PM in response to Mario Lordeiro
    Level 8 (49,110 points)
    Mac OS X
    Feb 16, 2015 6:01 PM in response to Mario Lordeiro

    If the SMC / NVRAM resets don't work, the usual cause is a hardware fault that can sometimes be intermittent. A corrupted OS X installation, defined as alteration or deletion of required operating system components, is also possible. That can be solved by reinstalling OS X, which will not delete your User account information or data. If you want to try that, back up your system first as a precaution against the unexpected.

     

    If reinstalling OS X works, the reason for corruption would still need to be determined because it's likely to occur again.

  • by Linc Davis,

    Linc Davis Linc Davis Feb 16, 2015 6:49 PM in response to Mario Lordeiro
    Level 10 (207,963 points)
    Applications
    Feb 16, 2015 6:49 PM in response to Mario Lordeiro

    In some cases, this issue is caused by a hardware fault. A loose connection, a short circuit, or a microscopic break in a solder joint may open and close depending on temperature, making the failure intermittent.

    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.. There are a few reports that the problem was solved by unchecking the box marked

              Wake for Wi-Fi network access

    in the Power Adapter tab of the Energy Saver preference pane. I can't confirm.

    3. Reset the NVRAM.

    4. Reset the System Management Controller.

    5. Start up in Recovery mode. In the menu bar of the OS X Utilities screen, there's a Wi-Fi menu. Try to connect. 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.

    6. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.