Fix Broadcom 802.11n network adapter not working Windows


Imagine this scenario: you’re in the middle of a crucial online conference call, and suddenly your internet connection drops. You frantically troubleshoot, only to discover that your Broadcom 802.11n network adapter is not working on your Windows PC. Frustration sets in as you realize how dependent you are on a stable internet connection in today’s digital age. But fear not, for in this article, we will delve deep into the troubleshooting steps to fix this common issue, helping you regain your online connectivity.

Possible Reasons for the Issue:

Before we embark on the journey to resolve the problem, let’s understand why your Broadcom 802.11n network adapter may fail to function on your Windows system. Several factors can contribute to this issue:

  1. Outdated or Corrupted Drivers: One of the most common culprits behind network adapter problems is outdated or corrupted drivers.
  2. Software Conflicts: Conflicts with third-party software or applications can interfere with the network adapter’s operation.
  3. Hardware Issues: Physical damage or malfunctions in your network adapter or related hardware components can lead to connectivity problems.
  4. Network Configuration: Incorrect network settings or configurations can impede the adapter’s ability to connect to networks.
  5. Windows Updates: Sometimes, Windows updates can inadvertently cause network adapter issues.

Common Error Codes with Examples:

When your Broadcom 802.11n network adapter malfunctions, you may encounter error codes that provide insight into the underlying issue. Here are some common error codes you might come across:

  1. Code 10: This error typically indicates a driver-related problem. For instance, “This device cannot start. (Code 10)”.
  2. Code 43: It points to a hardware issue with the network adapter. For example, “Windows has stopped this device because it has reported problems. (Code 43)”.
  3. Limited Connectivity: This is a common issue where your adapter connects to the network but with limited functionality.

Fixing the Broadcom 802.11n Network Adapter Issue:

Now, let’s explore various methods to fix the Broadcom 802.11n network adapter not working on Windows. We will cover both automatic and manual steps for your convenience.

1. Automatic Steps:

a. Update Drivers: Use the Windows Device Manager or a dedicated driver update tool to automatically update your Broadcom 802.11n network adapter drivers.

b. Network Troubleshooter: Run the built-in Windows Network Troubleshooter to identify and resolve common network issues.

c. System Restore: If the problem occurred recently, consider using System Restore to revert your system to a previous state when the adapter was functioning correctly.

2. Manual Steps:

a. Driver Reinstallation: Uninstall the network adapter’s drivers and then manually reinstall them from the manufacturer’s website.

b. Check for Hardware Issues: Physically inspect the network adapter and its connections for any visible damage. Replace the adapter if necessary.

c. Reset Network Settings: Resetting your network settings can often resolve configuration-related issues.

d. Disable Conflicting Software: Temporarily disable or uninstall third-party firewall, antivirus, or VPN software to check if they are causing conflicts.

e. Windows Update: Check for and install any pending Windows updates, as they might contain fixes for network adapter issues.


In today’s interconnected world, a non-functional network adapter can be a major roadblock to productivity. However, by following the steps outlined in this guide, you can troubleshoot and resolve issues with your Broadcom 802.11n network adapter on Windows. Whether it’s updating drivers, resolving software conflicts, or addressing hardware problems, you have a range of solutions at your disposal.


  1. Why is my Broadcom 802.11n network adapter not working after a Windows update?
    • Windows updates can sometimes introduce compatibility issues with drivers. Try updating your network adapter drivers or rolling back the Windows update.
  2. Should I use a driver update tool or manually update my drivers?
    • It’s generally recommended to manually update drivers from the manufacturer’s website. However, driver update tools can be convenient for less tech-savvy users.
  3. What should I do if my network adapter still doesn’t work after trying all the steps?

    • If the issue persists, consider seeking professional assistance or contacting the manufacturer’s customer support for further guidance.

Sakshi Anant Author