Skip navigation

wifi won't turn on after a few hours

487 Views 4 Replies Latest reply: May 10, 2013 9:35 AM by zijohn RSS
zijohn Calculating status...
Currently Being Moderated
Apr 29, 2013 9:07 PM

I am using OS X 10.7.5 on my MacBook Air 13". I have noticed for quite some time now that the Wireless function stops working after a few hours of operation. Then I usually turn the WiFi off then back on again to make it work. However, sometimes the "turn wifi on" does not work after it went off. So, I have to restart the system. This becomes annoying that I almost have to do a restart the machine every day.


Does anyone have a fix to this ?






Macbook Air, No backlight
  • sheila_m. Community Specialists Community Specialists (3,060 points)
    Currently Being Moderated
    May 2, 2013 7:59 AM (in response to zijohn)

    Hello John,


    Having a consistent Internet connection on your MacBook Air is definitely important.  There is an article specifically for troubleshooting Wi-Fi issues on Lion that may help with this:


    Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6



    There is a section in that article that matches your issue:

    Symptom: The network connection drops unexpectedly

    • Your Mac may not not stay connected to your Wi-Fi network reliably.
    • Your Mac may stop accessing the Internet during use.


    Try the steps in that section including the portion about not being able to connect to Wi-Fi after waking from sleep. 




    Sheila M.

  • sheila_m. Community Specialists Community Specialists (3,060 points)
    Currently Being Moderated
    May 3, 2013 1:59 PM (in response to zijohn)

    Hi John,


    Thanks for the additional information.  What I would try next is resetting System Management Controller:


    1. Shut down the computer.
    2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its 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.
    4. Release all the keys and the power button at the same time.
    5. Press the power button to turn on the computer. 
      : The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.


    You can find the full article here:

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


    If this still doesn't help, it would be time to take it in to be looked at.  You can setup an appointment at a Genius Bar by clicking on the following link:





    Sheila M.


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.