7 Replies Latest reply on Nov 15, 2017 2:28 AM by lktro

    NUC6CAYH network adapter missing

    lktro

      Good morning

      This morning one of my intel Nuc has lost the network adapter.

      I reinstalled the drivers and they did not find the network adapter.

      Looking at the network connector I have seen that the LEDs do not light even when the cable is connected.

      I have opened an RMA waiting for a solution.

      One hour later the other of my intel Nuc has also given the same problem.

      Any idea what may be happening?

        • 1. Re: NUC6CAYH network adapter missing
          Al Hill

          Your router or switch to which they are connected has died?

           

          Doc

          • 2. Re: NUC6CAYH network adapter missing
            lktro

            Hello,

            no, the router works. I have tried other ports that are working with other machines.

            Regards

            • 3. Re: NUC6CAYH network adapter missing
              Al Hill

              Ok, I was just wondering if some electrical issue took them out.  Kind of unusual for both NUCs to die.

               

              Doc

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              • 4. Re: NUC6CAYH network adapter missing
                lktro

                Well, one of the Nuc is connected directly to the router, the other is connected by a switch. They are in different buildings, separated a few meters from each other, with different electrical installation. The network has a total of 10 machines of different types connected by cable and only the two Nuc have failed. I'm also surprised that they fail at the same time. Regards

                • 5. Re: NUC6CAYH network adapter missing
                  lktro

                  Problem solved.

                  After disconnecting the power and reconnecting after a few seconds, the adapter works again. The connector Leds work again and the adapter appears again. In one of the Nuc that lost the network configuration and after reconfiguring the two return to work.

                  I have no idea why the adapter could be frozen in this way.

                  Thanks to user Al Hill for his interest.

                  Regards.

                  • 6. Re: NUC6CAYH network adapter missing
                    N.Scott.Pearson

                    Very interesting. I remember someone else reporting that a power interruption corrected a similar issue (or perhaps the same one; I couldn't find the reference in a quick scan, however). I wonder if some sort of ground loop is forming?

                    ...S

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                    • 7. Re: NUC6CAYH network adapter missing
                      lktro

                      Hi Scott,

                      thanks for the idea of the "ground loop".

                      I have been inquiring into the history of the installation of the two buildings, I am relatively new here, and it seems that this is full of failures of this type

                      The UPS network card has also been frozen more than once having to remove the power to make it work again. The alarm system, also connected to the router, has also given failures. Even the office lights go off without any justification!

                      In the words of my boss, "we are chasing a ghost for a long time".

                      Everything points to a ground loop or an electrical derivation.

                      Thanks again and regards.