Full Fixes for “the Realtek Network Controller Was Not Found”

The Realtek Network Controller Was Not Found If Deep Sleep Mode Is Enabled

In a computer, there are many component parts. From time to time, one of them may fail to work or cause an error, which is not surprising. In today’s post, we will introduce the Realtek Network Controller error to you.

The detailed error message says “The Realtek Network Controller was not found. If Deep Sleep Mode is enabled Please Plug the Cable”, as shown below.

The error means you cannot start the network card because it doesn’t come out of Sleep Mode with other computer components. In order to fix this issue, now you should try these methods below.

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Solutions to “the Realtek Network Controller Was Not Found” Windows 10/7

Update or Reinstall Your Network Driver

When getting the above error message on your PC, you can try to update or reinstall the network driver. Here is the guide:

Step 1: Open Device Manager.

Step 2: Expand Network adapters and right-click Realtek PCIe GBE Family Controller to click Update Driver Software (sometimes Update Driver) to update the network driver, and then let Windows automatically search for and install the updated driver software.

To reinstall the network driver, you should click Uninstall. Then, go to the official site of your manufacturer to download the necessary software and install it on your PC.

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Prevent Your Adapter from Getting into Sleep Mode

“The Realtek Network Controller was not found if Deep Sleep Mode is enabled please plug the cable” error appears since the network adapter is in sleep mode. To get rid of the error, you can change the Sleep Mode setting to prevent the adapter from getting into Sleep Mode.

Step 1: Also, you need to launch Device Manager.

Step 2: Double-click Realtek PCIe GBE Family Controller.

Step 3: Under the Power Management tab and uncheck the box of Allow the computer to turn off this device to save power.

Troubleshoot Your Hardware

Sometimes the Realtek Network Controller not found error is caused by the problems with the network adapter or RAM. Just have a check on your hardware.

Step 1: Shut down your computer completely and unplug the power cable. If you are using a laptop, remove the battery.

Step 2: Open the computer case or remove the laptop cover and remove RAM from your motherboard.

Step 3: Leave RAM for half a day to interrupt the network controller’s Deep Sleep Mode.

Step 4: Put the memory chip back in your PC.

Step 5: Connect the power cable and battery, then power on your PC and check if the error is resolved.

Check the Power of the Network Controller in BIOS

Follow these steps to check whether the power of the network adapter is on in BIOS.

Step 1: Restart your computer and press a specific key to enter BIOS. 

Step 2: Look for Integrated NIC or Onboard Lan Setting or another one with Lan in its name.

Step 3: You will find the item is set to Enabled.

Step 4: Turn on the power, restart the PC and check the operation of the network card if the reverse is specified.

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Reset BIOS

Sometimes “the Realtek Network Controller was not found” happens due to some faulty settings in your computer. To fix your issue, you can reset BIOS to default settings.

Step 1: Go to BIOS and find the setup defaults option.

Step 2: Press Enter to start resetting BIOS, then save the change and exit BIOS.

Final Words

Have you got “the Realtek Network Controller was not found” error in Windows 10/7? Now, you should get rid of the error after trying these solutions mentioned above.