

If a BIOS update process is interrupted, the computer may not function properly. If the issue still persists, update BIOS from the link given below: Now restart the computer and check if you get any error message.

If the Onboard LAN controller is Disabled, enable the Onboard LAN controller and Save and exit.Scroll down to “Onboard LAN controller” and check if it is enabled.Restart the computer and hit F2 on Dell logo.

I have provided steps below to check the status of Onboard LAN controller: If the error message pops up again, please check the settings in BIOS if the Onboard LAN controller is enabled. Restart the computer in “Safe mode with networking”(restart the computer and key tapping F8 on Dell logo and select safe mode with networking) to check if it works.
