Ruth Haines
If you're experiencing issues with your MacBook's wireless connectivity, it could be a problem with your Airport card. Before concluding that the Airport card is faulty, you can try some troubleshooting steps. First, check if you're within range of your Wi-Fi router, as being too far away can cause connection issues. Verify the signal strength by looking at the number of black bars displayed on the AirPort icon in your MacBook's notifications bar. Restart your computer and router, and if you've recently woken your MacBook from Sleep mode, renew your DHCP lease. If these basic steps don't work, you can try more advanced troubleshooting, such as resetting the SMC and checking your network settings. If you're still having issues, you may need to run a hardware check using Apple Diagnostics or Apple Hardware Test, depending on your MacBook's age.
| Characteristics | Values |
|---|---|
| How to check if the airport card is installed | Go to System Preferences > Network. At the top, it should say "Status: Connected." There should also be a button that refers to the Wi-Fi. |
| How to test if the airport card is working | If you can connect to a wireless network and pass traffic, your card is working. |
| What to do if the airport card is not working | Restart the computer. Move closer to the Wi-Fi router. Renew your DHCP lease. Reset the SMC. Try Apple Diagnostics or Apple Hardware Test. |
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What You'll Learn
Check if your MacBook is connected to Wi-Fi
To check if your MacBook is connected to Wi-Fi, you can try the following steps:
First, click on the Wi-Fi icon in the top menu bar of your MacBook. This will display a list of available Wi-Fi networks. If your MacBook is already connected to a Wi-Fi network, it will show the network name and a signal strength indicator. The signal strength is indicated by the number of black bars displayed on the AirPort icon. Two or fewer bars indicate that you may be too far from the router and on the outskirts of its range.
If your MacBook is not connected to any Wi-Fi networks, you can try to connect by selecting a network from the list and entering the password, if required. If you don't see any available networks, try moving closer to your router and check again.
You can also check your Wi-Fi connection by opening System Preferences. Click on the Apple menu and select System Preferences, then click on Network. At the top, it should say "Status: Connected" if your MacBook is connected to Wi-Fi.
If you're having trouble connecting to Wi-Fi, you can try restarting your MacBook and your router. If that doesn't help, you can try using Apple Diagnostics or Apple Hardware Test to check for any issues with your AirPort card or hardware.
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Verify the signal strength
If you're experiencing issues with your Wi-Fi signal strength on your Mac, there are several ways to verify and address the problem.
Firstly, you can use the built-in Wi-Fi icon RSSI (Received Signal Strength Indication) menu item on your Mac. Hold down the Option key and then click on the Wi-Fi icon in the menu bar. Note the value for RSSI, which is measured in dBm (decibel milliwatts). The higher (less negative) the number, the stronger your Wi-Fi signal. Apple uses a scale of 0 to -100, with -30 dBm being the maximum signal strength achievable, typically when you're very close to the router. Anything from -30 dBm to -50 dBm is considered excellent, while -67 dBm is the lowest acceptable value for most online services.
You can also use Wireless Diagnostics to analyse your network connection. To do this, quit all open apps, try to join the problematic Wi-Fi network, press and hold the Option key, click on the menu bar, and choose Open Wireless Diagnostics. After the analysis, you'll receive a list of detected issues and possible solutions. Additionally, you can install third-party apps like InSSIDer to check your wireless network's signal strength.
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Try Apple Diagnostics or Apple Hardware Test
If you suspect that your MacBook is suffering from hardware issues, you can use Apple Diagnostics (formerly known as Apple Hardware Test) to help determine which hardware component might be at fault. Apple Diagnostics is also useful if you're experiencing issues such as your Mac running slowly, your MacBook fan making noise, or your Mac overheating.
Apple Diagnostics is free to use and suggests solutions while helping you contact Apple Support for further assistance. Before running the test, ensure that you have an internet connection, and eject and unplug external hard drives, iPhones, and iPads. However, you can keep your mouse, keyboard, and display plugged in. When running Diagnostics on a MacBook Pro or another portable device, use a power adapter (AC power source) to prevent battery drain and unexpected shutdowns.
To run Apple Diagnostics, shut down your Mac and disconnect all external devices except your keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power. Ensure that your Mac is on a hard, flat, stable surface with good ventilation. Then, turn on your Mac and press 'D' on your keyboard. You will see a loading bar as the test runs.
Once the test is complete, you will see one of the following messages on the screen: "No issues found" if your Mac is functioning correctly, or a brief description of the issues, together with one or more reference codes and additional instructions. If you see the latter, write down the error codes and use them to look up more information about the issue.
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Reset the SMC and check network settings
Resetting the SMC (System Management Controller) can resolve some computer issues, such as not starting up, not displaying video, sleep issues, fan noise issues, and more. The SMC is a chip on the logic board that controls all power functions for your computer, including telling the computer when to turn on, turn off, sleep, wake, idle, etc.
To reset the SMC, first determine whether your Mac notebook has a removable battery. Most older Mac notebooks have removable batteries. If your Mac has a removable battery, shut down your Mac, remove the battery, and then press and hold the power button for 5 seconds. Reinstall the battery and press the power button again to turn on your Mac.
If your Mac has a non-removable battery, follow these steps:
- Plug in the MagSafe power adapter to a power source and connect it to your Mac if it's not already connected.
- Shut down your Mac.
- On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
- Release all the keys and the power button simultaneously.
- Press the power button to turn on your computer.
Note that resetting the SMC does not reset the PRAM and will not resolve issues in which your computer is unresponsive. If your computer is unresponsive, restarting your computer will generally suffice.
After resetting the SMC, you can check your network settings by going to System Preferences > Network. At the top, it should say "Status: Connected." There should also be a button that refers to the Wi-Fi. If you are still experiencing issues with your network connection, it may be due to an issue of configuration. Apple sets default network parameters that work adequately in a wide range of network environments, but these settings may not be ideal for your specific environment. You can try using a tool like IPNetTuner X to help with the tuning process.
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Check for the latest software updates
To check for the latest software updates on your MacBook, you can use Software Update, which will find and install Apple software updates and upgrades that are compatible with your Mac model.
Here's how to do it: Go to the Apple menu in the corner of your screen and choose System Settings. In the window that opens, click on General in the sidebar, then click on Software Update on the right. Alternatively, you can use Spotlight to search for "Software Update" and open it from there.
When Software Update opens, it will automatically check for new software. If there are any available updates or upgrades for your Mac, you will be given the option to install them. You can choose to install them immediately or later that night. It's generally a good idea to back up your Mac before installing new software. During installation, your MacBook might restart and show a progress bar or a blank screen several times.
To check for updates to software downloaded from the App Store, open the App Store. Go to System Settings, click on General in the sidebar, and then click on Software Update. The number of available updates, if any, will be shown next to the App Store. Click on App Store to continue in the App Store app and install the updates.
You can also set your Mac to automatically download and install updates. To do this, go to Software Update settings and turn on "Download new updates when available" and "Install macOS updates".
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Frequently asked questions
If you can connect to a wireless network and pass traffic, your AirPort card is likely working.
Try restarting your computer and moving closer to your Wi-Fi router. If this doesn't work, you may need to renew your DHCP lease, especially if your MacBook Pro was in Sleep mode.
Click on the "Apple" in the MacBook Pro's menu and click "System Preferences". Then, click on your Wi-Fi card in the list of available devices and click the "Advanced" button.
Go to "System Preferences" and then "Network". If your AirPort card is installed and switched on, it should say "Status: Connected" at the top.
Try taking your MacBook to your local Apple store to get it tested.
