Ethernet problem.

Peter Woodhouse 85 Reputation points
2026-10-22T04:32:03.4266667+00:00

Windows 11 Pro. 26H2. Build 26300.9711

Running 5G mobile wi-fi adapter for internet and using ethernet cable for computer. Been using it this way for 3 years when suddenly the ethernet drops out and wi-fi takes over. Have checked the adapter, everything looks good there.

Changed the ethernet cable, but still only have wi-fi available.

Any ideas???

Cheers,

Peter.

Windows for home | Windows 11 | Internet and connectivity
0 comments
Answer accepted by question author
Ivan B 127.3K Reputation points Independent Advisor
2026-10-22T07:07:55.26+00:00

Hi,

That’s strange. Let’s try a simple test: shut down your PC completely and unplug it from the power source. Wait about 3 minutes, plug it back in, and turn the PC on. Once it boots up, check to see if the Realtek network driver reappears.

If it doesn’t, we’ll need to take a look at the BIOS to see if the option has been disabled.

Thanks.

Was this answer helpful?

1 person found this answer helpful.

9 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Ivan B 127.3K Reputation points Independent Advisor
    2026-10-22T07:01:41.86+00:00

    Hi,

    That’s strange. If the port is being recognized but there’s no network driver in Device Manager, are there any drivers showing an error or listed as disabled?

    If so, please take a screenshot and post it here.

    Thanks

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.