Fix Ethernet and WiFi Connection Issues After BIOS Update in Windows 11

2024/11/16

Installing a BIOS update is essential as it enhances hardware support and system reliability. However, some users have reported experiencing internet connectivity issues following such updates. If you find that Ethernet or WiFi is malfunctioning after a BIOS update on Windows 11/10, the solutions outlined in this guide will assist you in resolving the issue.

Troubleshooting Ethernet or WiFi Problems after a BIOS Update in Windows 11/10

If your computer’s Ethernet or WiFi doesn’t function properly after updating the BIOS, consider the following troubleshooting steps:

Execute a Hard Reset
Utilize the Network and Internet Troubleshooter
Restore BIOS to Default Settings
Clear the CMOS
Verify that OnBoard LAN is enabled in BIOS
Reinstall the Network Adapter driver
Reset your PC

Detailed explanations for each solution follow below.

1] Execute a Hard Reset

Start by performing a hard reset of your device. To complete this, follow the instructions below:

Shut down your computer or laptop.
Unplug the power cable from the wall socket. For laptops, detach the charger.
Press and hold the power button for about 30 seconds. Afterward, reconnect the power cord and turn your device back on.

Check if the connectivity issue persists.

2] Utilize the Network and Internet Troubleshooter

The Network and Internet Troubleshooter is an automated tool designed to identify and resolve connectivity issues on Windows systems. We recommend running this troubleshooter through the Get Help app to see if it resolves your problem.

3] Restore BIOS to Default Settings

After a BIOS update, certain settings may have changed, which could lead to Ethernet problems. Resetting the BIOS to its default configuration may resolve this. Be sure to document any custom settings before restoring the defaults, so you can reinstate them later if needed.

4] Clear the CMOS

Clearing the CMOS can also be beneficial. To do so, you will need to access your computer’s internals.

Find the small round battery located on the motherboard. Carefully remove it, wait a few moments, and then reinsert it.

5] Verify OnBoard LAN is Enabled in BIOS

Review the OnBoard LAN setting in the BIOS. If this feature is disabled, your Ethernet connection may not function. Navigate to the Onboard Devices Configuration section in your BIOS settings to check its status. The exact naming may vary by manufacturer, so consult your computer’s official documentation if needed.

6] Reinstall the Network Adapter Driver

Incompatibility with the new BIOS update may cause issues with your Network Adapter driver, leading to connectivity troubles. Reinstalling the driver could rectify the situation.

To reinstall the Network Adapter driver, follow these steps:

Access Device Manager.
Expand the Network adapters category.
Right-click the Network adapter in use and choose Uninstall device.
Restart your device or select to scan for hardware changes.

Your system should automatically reinstall the driver. If issues continue, download the latest driver version from the manufacturer’s website and install it manually.

7] Reset Your PC

If problems persist, consider resetting your PC. Choose the “Keep my files” option during the reset process. If the issue remains unresolved, your final option may be to seek assistance from support services.

That’s all there is to it. Hopefully, these steps guide you toward a solution.

Can BIOS Updates Affect Ethernet Functionality?

BIOS updates enhance hardware compatibility; however, they can sometimes lead to Ethernet issues post-update. If this happens, try uninstalling and reinstalling the Network Adapter driver to troubleshoot the problem.

How Can I Fix a Corrupted Wi-Fi Driver in Windows 11?

WiFi connectivity problems can arise due to a corrupted driver. To address this, open Device Manager and inspect the WiFi driver properties for any error codes, then troubleshoot accordingly. Alternatively, you might need to uninstall and reinstall the WiFi driver to restore connectivity.