Troubleshooting the ‘Realtek PCIe GBE family controller not working’

Sometimes you may find that there is no network or that the Realtek PCIe GBE family controller keeps disconnecting under Windows 10. If you look in Device Manager, you will only find a yellow exclamation mark after the network adapter tree extension. Sometimes the Device Manager reports that the network adapter has error code 31 or error code 12.

For some users, driver or hardware problems with the Realtek PCIe GBE controller family are also common. In any case, you should immediately solve this problem with the Realtek network driver on Windows 10.

What is the Realtek PCIe GBE family controller?

What is a Realtek PCIe GBE controller family

It is a Realtek controller chipset that connects your computer’s mainframe PCI Express (PCIe) bus to GBE (Giga Band Ethernet). In addition, it also allows you to connect your computer to a wired Internet network so that your computer works with the Internet.

Simply put, the Realtek PCIe GBE Family Controller driver works for the LAN hardware integrated into your PC’s motherboard.

Your Realtek PCIe Family Controller is not compatible with Windows 10.

Why your Realtek PCIe GBE Family Controller does not work on Windows 10

Various factors can prevent the Realtek controller from working properly. One of these reasons could be a simple error of enabling Wi-Fi connection and wired connection at the same time. To disable Wi-Fi, simply hover your mouse over the buttons in the bottom right corner of the toolbar, click on the Wi-Fi icon and disable the Wi-Fi connection you’re currently connected to. It’s that simple!

Sometimes the reason is a little more serious. To get a PCIe GBE family controller from Realtek, you had to download the driver from the Realtek website. You need to make sure that you are downloading from the correct site.

You will most likely get a defective product or not get one at all if you download something from a site that is not affiliated with the motherboard company of the product you are looking for.

The more you use questionable-looking sites or sites without a valid domain name, the more likely you are to get some kind of virus or malware in exchange for a download. You can trade the product you want for malicious material that can infect and compromise your computer.

Repair the Realtek Family controller

Repair the Realtek Family controller

A system restore point is used

Having a system restore point at a time when you know everything is working fine is a good thing, as it can save you a lot of trouble in such a situation. If you have one, follow these steps to get back to that point.

  1. While holding down the Windows key, press R. Type rstrui.exe and click OK.
  2. Click Next, select a restore point from the date you know everything works and finish the wizard. Your computer should now be back to what it was before the error.
Manually installing the driver

If you don’t have a system restore point or prefer to avoid this method, you can always try installing the LAN controller drivers manually. Before you start, download the drivers for the built-in network adapter from your laptop/motherboard manufacturer’s website.

  1. Hold down the Windows key and press R. Type devmgmt.msc and press OK.
  2. In the device list, expand the list of network adapters and find the PCIe GBE family controller from Realtek.
  3. Right-click and select Update Driver Software.
  4. Select manual mode, which allows you to choose your own drivers, and specifies the correct driver previously downloaded.
  5. Let it install, reboot the device at the end, and everything should work fine.

NOTE: If this doesn’t work, try removing the battery from the motherboard for a minute and then reinstalling it before updating the drivers. This will reset the BIOS and help you if Windows is stuck with an old driver and allow you to install a new driver.

Getting a PCIe Network Adapter

If the above methods didn’t work, it could mean that your network adapter is dead.
Unfortunately, the only way to solve this problem is to buy a new card. Luckily, PCIe network adapters are very cheap these days. All you have to do is find one that meets your needs in terms of speed and compatibility with your motherboard, and you’re good to go, but it will require advanced skills to replace the adapter, so you can also get a USB wifi adapter and connect to your wireless network if your router supports it.

Ultimately, whether it’s a software or hardware problem, the fix will either be free or very inexpensive if you need to buy a new network adapter. Either way, the above methods will help you find the cause of your problem and fix it.

Reinstall the driver that is causing the problem
  1. Press Windows + R, type “devmgmt.msc” (without the quotes) and press Enter to open the Device Manager.
  2. Expand “Network Adapters” and right-click “Realtek PCIe GBE Family Controller”.
  3. Then select “Remove” and select “Yes” in the confirmation prompt.
  4. Now disconnect the Ethernet cable and plug it back in so that Windows automatically installs the drivers. It is also recommended that you reboot to save these changes.
  5. If you cannot remove the driver, disconnect and re-enable it.
  6. If you can’t do any of the above, right-click and select Properties.
  7. Now see if you can reboot the drivers.
  8. Reboot your computer to save your changes and see if you can restore the Realtek PCIe GBE Family Controller adapter that has driver problems.

Most Frequently Asked Questions

  1. Press the Windows + R keys when opening the Run window.
  2. Devmgmt type.
  3. The Device Manager window will open.
  4. Select the Network Adapters window, right-click on the Realtek PCIe option and select Remove Drivers.

The Realtek PCIe Gbe Family Controller is a driver that resides on your motherboard and is used to control your local area network hardware. It controls the wired network function of your computer. It is a set of controller chips that connects your computer's PCI Express (PCIe) bus to GBE (Giga Band Ethernet).

  1. Uninstall and download the latest network driver.
  2. Remove the Cisco VPN client or any other unsupported VPN software.
  3. Remove the wireless profile.
  4. Follow the troubleshooting procedure.
  5. Reboot the router.
  6. Make sure the network is turned on.
  7. Reboot the network.

  1. Go to "Search", type "Device Manager" and open "Device Manager".
  2. Find your Realtek Ethernet driver, right-click on it, and select Uninstall.
  3. Wait for the wizard to uninstall your driver.
  4. Reboot your computer.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.