Macbook Air

I had 'Yosemite' OS installed on my Macbook Pro (15-inch, Mid 2012) and the wi-fi was working fine. Then I updated it to 'El Capitan 10.11.1' and getting wi-fi issue as it was connecting and disconnecting automatically. So I read release note of 'El Capitan 10.11.2' that they have fixed the wi-fi issues in their new update and so I again updated my OS to 10.11.2 but no use. Now I am not able connect my macbook pro to wi-fi and it's telling that 'Wi-fi : No hardware installed'. Please help if anyone knows about it. Thank you in advance.

Wifi Looking For Networks Macbook Pro El Capitan Download

Oct 17, 2015  Step 2: Turn off Wi-Fi from menu item located at the upper right corner of OS X. Step 3: Head over to Finder, and hit Command+Shift+G to get Go to.