How to Fix Ethernet or WiFi not working after BIOS update

Since it enhances system stability and hardware compatibility, installing a BIOS update when it becomes available is crucial. However, some users reported that after performing the BIOS update, they were unable to access the internet. If you are using Windows 11 or 10, and you updated the BIOS, but your Ethernet or WiFi is still not working, apply the remedies offered in this article.

After a BIOS update in Windows 11 or 10, Ethernet or WiFi no longer works

If your Windows 11 or 10 PC's Ethernet or WiFi is not working after a BIOS update, try the following fixes:

Perform a Hard Shut Down

Run the Internet and Network Troubleshooter

Restore the BIOS to its default settings

Clear CMOS

Check in the BIOS that the OnBoard LAN is enabled.

Reinstall the driver to repair the network card.

Power down your PC

The following is a detailed explanation of all these repairs.

1. force a factory reset

First, try restarting your computer to resolve the issue. Here's what you have to do:

Turn your computer off.

Pull the power line out of the wall outlet. Unplug the power cord in case of a laptop.

Hold the power button for 30 seconds. First plug in the power cord and turn on your laptop.

Watch if it persists.

Read: What to Do When Your Computer Wouldn't Start Up After BIOS Revision

2. open Internet and Network troubleshooter

With the aid of this automated program called the Network and Internet Troubleshooter, problems on the networking section of your Windows OS have come easily treatable. We urge that you first give a shot to the one that can be accessed from the Get Help application.

Check out: Sound doesn't work anymore after bios update.

3. Reset the BIOS to default settings.

In case of malfunctioning ethernet on your system, that might have occurred right after you updated your system with the latest available BIOS version and changed some of the settings along the way. If that did not work, you could reset the BIOS to its default settings. Before proceeding with the BIOS reset, take note of all of your personalized BIOS settings to easily restore them later.

See: Graphics card not working after BIOS update.

4-Reset CMOS

This may also be done by resetting the CMOS battery. For this purpose, the laptop or computer casing needs to be opened.

Within it, locate the small, silver coin-shaped battery. It can be put back after a few minutes of being carefully removed from the socket.

See: Dead battery after BIOS update fix

5. In BIOS, OnBoard LAN feature is disabled.

In the BIOS, check OnBoard LAN. If this is OFF, your computer will never be able to use an Ethernet connection. This option should be checked in the BIOS of your system. If this shows up in your BIOS, toggle this setting on. Onboard Devices Configuration is a setting in the BIOS where you can find this option. However, depending on the brand, this option may appear differently for you. You can view this option in your computer's BIOS from the manufacturer's website.

6. Reinstall the driver software for the network adapter.

Incompatibility issues might be causing this issue. Your inability to access the internet might result from an incompatible latest BIOS update with your network card driver. To resolve this, simply reinstall the driver software of the network adapter.

To do that, follow these steps:

Launch the manager of devices.

Grow the subfield of network adapters.

Select Uninstall device from the context menu after right-clicking your network card driver.

To check for hardware updates, either restart your computer or run a scan.

Removed driver will be reinstated by Windows. Ensure the problem persists. If so, you will have to install the latest version of network card driver of your computer manually, which can be downloaded from the manufacturer's website.

7. Switch all devices and computers off.

Resetting your computer may be necessary if the issue continues. By performing this task, your computer will be fixed. Choose "Keep my files" when prompted to do so during the factory reset. A last resort is to get in touch with support if all else fails.

These steps will help you solve the problem of Ethernet or WiFi not working after updating the BIOS. That's all for today, without further ado, see you soon.