Install Wifi Hardware For Mac

• Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power. Apple Hardware Test might display an error message if you don't disconnect all other devices. • Make sure that your Mac is on a hard, flat, stable, well-ventilated work surface. • Shut down your Mac. •, then immediately press and hold the D key on your keyboard.

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Jul 18, 2017 - Learn how to fix WiFi No Hardware Installed error on Mac OS X. Resolve this terrible Wi-FI problem to connect on the internet today.

Keep holding the D key until you see the Apple Hardware Test icon: • Select your language and click the right arrow. If you aren't using a mouse, you can use the up and down arrows to select a language, then press the Return key. • To begin testing, click the Test button, press T, or press Return.

Optionally select 'Perform extended testing' before beginning the test. This performs a more thorough test that takes longer to complete. • When the test is complete, review your test results in the lower-right section of the window. • To quit Apple Hardware Test, click Restart or Shut Down at the bottom of the window.

• Some Mac computers that shipped with will start up from AHT over the Internet if your startup disk doesn't contain AHT, or if you hold down Option-D at startup. This requires an Internet connection over Ethernet or Wi-Fi. • If you're using OS X Lion v10.7 or earlier and you can't get AHT to start, see if you have an OS X installation disc named “Applications Install Disc 2.” Insert the disc in your internal optical drive or external Apple SuperDrive before following the steps above. Or, if you're using a MacBook Air (Late 2010), plug the MacBook Air Software Reinstall thumb drive into your USB port instead.

Alisha Gambhir writes in, noting that her MacBook Pro suddenly reported that it had no Wi-Fi hardware installed. This is odd because, as you know, all Mac laptops (and nearly every Mac made for several years) includes a Wi-Fi adapter.

Inactive Wi-Fi, as opposed to a broken Wi-Fi driver, shows that it’s not configured. There are two ways you can wind up with an x in the Wi-Fi menu’s icon.

One is what’s happened to Alisha and other folks who have posted about this problem over a few years; the other is when the adapter has been disabled via the Network system preferences pane. If you click the Wi-Fi icon and the dropdown menu reads “Wi-Fi: Not Configured” then the adapter has been disabled. If that’s the case, you can re-enable it: • Launch System Preferences and click Network. • Select the Wi-Fi adapter in the list at left. It will be grayed out and have the label Inactive beneath it. • From the gear menu, select Make Service Active. • Click Apply.

Wi-Fi disabled in System Preferences appears as Inactive. The x will disappear from inside the Wi-Fi fan, and your computer will scan for networks or connect to a known one.

If hardware is the issue, the Wi-Fi drop-down menu will read “Wi-Fi: No Hardware Installed”. That’s either a low-level configuration issue or a hardware problem. You can try to the non-volatile memory (NVRAM) or the System Management Controller (SMC).

In forums, many users were able to solve the problem by resetting one or other of these. But if resetting those two system states doesn’t bring Wi-Fi back, it’s time to hit the shop. If your Mac remains under warranty, keep details of your testing handy and call for a repair. If it’s out of warranty, you can avoid an expensive motherboard or module repair by getting a third-party Wi-Fi USB dongle, like the, which comes with drivers from the maker for OS X and macOS through Sierra. Updated: The Edimax adapter’s maker added a Sierra driver. Ask Mac 911 We’re always looking for problems to solve! Email yours to including screen captures as appropriate.

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