1 Reply Latest reply: Jun 27, 2013 9:09 AM by allen a
Marietilla Level 1 Level 1 (0 points)

I have a MacBook Air since december, from last night I am unable to activate wifi.

When I go into settings to activate it, it comes up as desactivated and it is written "no hardware found" and can not activate it.


Have someone experienced this issue before? And how did you proceed?



MacBook Air, OS X Mountain Lion (10.8)
  • 1.
    allen a Community Specialists Community Specialists (2,750 points)

    Hello Marietilla,



    I would recommend resetting your computers PRAM and SMC.


    1. Shut down the computer.
    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. Immediately press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.Continue holding the keys down until the computer restarts, and you hear the startup sound for the second time.
    5. Release the keys.

    OS X Mountain Lion: Reset your computer’s PRAM



    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.

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