Follow these simple steps to resolve the problem of -NO WIFI HARDWARE INSTALLED.No need to follow those bullshit about pressing command, option and power key. Just few clicks andc it takes just 2minues and you are done.
Press the power button until you see the dialouge box below
Uncheck the option -“reopens windows when logging in back in” see image below
Restart the computer-Click the restart button as shown in the image below and you are done