Why Is My MacBook WiFi Not Working When Connecting a Monitor?Updated 24 days ago
If your MacBook's WiFi stops working when connected to a portable monitor, don't worry. We will provide you with troubleshooting tips.
MacBook WiFi Issues When Connected to a Monitor
When you connect the Macbook with the portable monitor, your WiFi is not working, you can unplug the MacBook charger to stop charging it. This is because when both the Macbook and the monitor are powered, reverse charging may occur, causing an inrush current. This can create electromagnetic interference (EMI), which disrupts WiFi and may cause it to stop working.
Other Causes of MacBook WiFi Issues
If WiFi still doesn't work after you stop powering your Macbook, it could be caused by something else.
1.Router or Network Issues
Your WiFi router may be the source of the problem.
2.Software Bugs
macOS updates or system glitches can interfere with connectivity.
3.Incorrect Network Settings
Misconfigured settings may prevent your MacBook from connecting to WiFi.
4.Interference from Other Devices
Other wireless devices can disrupt the signal.
5.Hardware Problems
A faulty WiFi card or antenna could be the cause.
How to Fix MacBook WiFi Issues?
1. Restart Your MacBook and Router
- Turn off your MacBook and unplug your router.
- Wait for 30 seconds and turn them back on.
- Check if the WiFi connection is restored.
2. Forget and Reconnect to the WiFi Network
- Click on the WiFi icon in the menu bar and select Network Preferences.
- Choose your network, click the minus (-) button, and reconnect by entering the password.
3. Reset the SMC and PRAM/NVRAM
- SMC Reset (For MacBooks with non-removable batteries):
- Shut down your Mac.
- Hold Shift + Control + Option and the power button for 10 seconds.
- Release all keys and turn your MacBook on.
- PRAM/NVRAM Reset:
- Restart your Mac and hold Option + Command + P + R until the Apple logo appears twice.
4. Check for macOS Updates
- Go to System Settings > Software Update.
- If an update is available, install it and restart your Mac.
5. Run Wireless Diagnostics
- Hold Option and click the WiFi icon.
- Select Open Wireless Diagnostics and follow the instructions to detect network issues.
6. Change DNS Settings
- Open System Settings > Network > WiFi.
- Click Advanced and go to the DNS tab.
- Add public DNS servers like 8.8.8.8 and 8.8.4.4 (Google’s DNS).
7. Disable Bluetooth
- Bluetooth interference can affect WiFi performance.
- Turn off Bluetooth in System Settings and check if WiFi improves.
8. Check for Hardware Issues
- If none of the above solutions work, your MacBook's WiFi card may be faulty.
- Visit an Apple Store or an authorized service center for a professional diagnosis.