Error with Wi - Fi for the night: "no hardware installed.

Hello

I am writing to a very painful problem occurred a few days ago (8 Feb). I went back to my Mac, a Mac Book Pro 13 "(fin 2011) and I found the wi - fi completely turned off, with an alarming"no hardware installed"error." Here is a screenshot:

Ethernet works fine (thankfully).

As a first step, I have re-installed OS X El Capitan (10.11.3), without wiping the hard drive. Nothing has changed.

Then I restored the system of my time since the standby Machine. Yet once, nothing has changed.

I also bought a USB wifi, USB Asus N10 Nano, but still no sign of life since Wi - Fi.

Here are a few screenshots of the information system:

Network/Wi-Fi

Hardware/USB

I don't know what to do next or where to look further.

Any tips?

Thank you very much!

Nicholas

In some cases, this problem is caused by a hardware failure. A loose connection, a short circuit or microscopic pause in a weld joint can open and close according to temperature, making intermittent failure.

Please test after taking each of these steps you have already taken it. Back up all data before making any changes.

1. Disable Bluetooth. If you have a desktop Mac, you will need a wired keyboard and mouse to take this step. Those that are useful to have anyway, because Bluetooth is not totally reliable. If a Wi - Fi connection works with disabled Bluetooth but not when you turn it on, remove all the pairings in the Bluetooth preferences panel and recreate them. Restart the computer and then test again.

2. There are some reports that the problem has been solved by unchecking the box marked

Continued access to the Wi - Fi network

in the tab of the energy saver preferences window power adapter. I can't confirm.

3. reset the NVRAM.

4. reset the system management controller.

5. start in recovery mode. In the menu bar of the OS X Utilities screen, there is a menu of Wi - Fi. Try to connect.

6. triple - click anywhere in the line below on this page to select this option:

/Library/Preferences/com.apple.Bluetooth.plist

Right-click or Ctrl-click on the highlighted line and select

Services ▹ reveal in Finder (or just to reveal)

of the contextual menu.*, a file must open with a selected item. Move selected item to the trash. You may be prompted for administrator login password. Restart the computer and empty the trash.

* If you do not see the item context menu copy the selected text in the Clipboard by pressing Control-C key combination. In the Finder, select

Go ▹ go to the folder...

from the menu bar and paste it into the box that opens by pressing command + V. You won't see what you pasted a newline being included. Press return.

7. an appointment of 'Genius' to an Apple Retail Store, or select another authorized service provider.

Tags: Notebooks

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