Hi, I am an Independent Advisor.
Let me help you with this issue.
I understand your Ethernet adapter is missing.
Have you tried performing a hard reset?
Power off the PC normally, and then follow the steps below.
Once the machine is powered off, unplug the computer's power cable from the rear. To use up any leftover power, press and hold the power button for 15 to 30 seconds. Wait a minute or two, then reconnect the power cable and restart the computer.