6 Replies Latest reply on Oct 16, 2017 4:30 PM by Intel Corporation

    Unsupported signal. Check device output

    DaveSanderson

      New NUC7i7BNH system with 32Gb Optane Memory, 16Gb RAM, 1,5Tb HDD.

       

      I am trying to connect system to Sony Bravia TV via HDMI cable/port.

      For first week of using the system I had no problem connecting to TV.

      Late last week, following either a Win10 update and/or Intel BIOS update, I have not been able to connect to TV.  Now, after POST,  I get a black screen with error display - 'Unsupported signal. Check device output.'

      I am presuming it is a problem with BIOS as computer doesn't even get to point of loading operating system.

       

      Do I need to roll back to previous BIOS or is their a new BIOS fix?

       

      Thanks,

      David Sanderson

        • 1. Re: Unsupported signal. Check device output
          Intel Corporation
          This message was posted on behalf of Intel Corporation

          Hello DaveSanderson,

          Thank you for contacting Intel® technical support.  I will be more than happy to help you.

          I understand that you are having issues with the system not booting up.  In order to confirm if this issue is related to a BIOS upgrade or to a Windows® 10 update, you can try downgrading the BIOS version to at least to previous versions.

          For instructions on how to perform a BIOS version downgrade, please follow the next link: https://www.intel.com/content/www/us/en/support/boards-and-kits/000006922.html

          Regards,

          Xavier A.

          • 2. Re: Unsupported signal. Check device output
            DaveSanderson

            Hi Xavier,

            Thank you for your reply.

             

            My question is not so much my NUC wont boot (it boots normally /fine to a monitor), it just wont boot when connected to the TV.

            It used to boot to the TV, but since the updates (Windows 10 and/or Intel BIOS) it doesn't boot to the TV.

            Do you think this still needs to roll back/downgrade the BIOS update.

            Also, my system has ME loaded, so if I have to rollback/downgrade, I only have the BIOS Recovery Update method to use.

             

            David

            • 3. Re: Unsupported signal. Check device output
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              Hello DaveSanderson,

              I was checking the ME Firmware versions of the latest and of previous BIOS versions.  From the BIOS version 0047 (released on May 18, 2017) to the BIOS version 0052 (released on September 18, 2017), you will have the exact same ME Firmware version (11.6.27.3264).

              You can check this and more information in the next link: https://downloadmirror.intel.com/27157/eng/BN_0052_ReleaseNotes.pdf

              In short, it will be safe to downgrade the BIOS to any version down to 0047.

              And, yes, I still recommend performing a BIOS downgrade to confirm if the latest update was the cause of the issue.

              Regards,

              Xavier A.

              • 4. Re: Unsupported signal. Check device output
                DaveSanderson

                Hi,

                I didn't get around to doing a rollback to the previous BIOS version, because shortly after getting your above email, I lost windows 10 - the whole operating system just disappeared along with all documents, etc..

                So I figured I would do a fresh install.

                After installing a fresh Windows 10, everything seemed to be fine.  Everything was running - The Optane Memory, even working on the TV too.

                Then, while watching some TV (the computer was still connected to the TV) today, Windows 10 performed another update... and you guessed it... the whole trouble started again, and MORE besides.

                 

                1. I lost the HDMI - when I switched back to using the TV as a monitor to watch some recorded programs, I got the same Unsupported signal error.  SO this seems to be a Windows 10 problem, not Intel.  But wait, there's more....
                2. While typing (e.g. as I typed this response) the desktop would refresh/blink about every 10 seconds or so...  When it does, I'd find that the insertion point had disappeared, so I had to select where I was typing again to be able to continue typing - this happened some 25 - 30 times; or
                3. After opening the Windows 10 Settings app, thinking to uninstall the most recent Windows 10 update, I find I cant access any options on the page (e.g. from 'Settings', 'Update & Security', then I find non of the options on that page wont open click one of the other options, but nothing happens, then, after about 10 seconds, the screen will refresh and the Settings window will instantly close, being unable to select any operation... this puts me in a dilemma,
                4. I cant use the Update & Security window to either uninstall this last update, run the Troubleshooter, or perform a recovery.

                 

                So I am now at the point of having to do a complete fresh Windows 10 install; unless someone has answer.

                 

                Any thoughts or fixes, please??

                 

                Regards,

                David

                • 5. Re: Unsupported signal. Check device output
                  Intel Corporation
                  This message was posted on behalf of Intel Corporation

                  Hello DaveSanderson,

                  I agree that it could be actually an issue related to the operating system.

                  I would suggest to reinstall the operating, but before download Windows® 10 again just in case, since the copy that you have might be corrupted.

                  To create a Windows® 10 installation media, please follow the instructions in the next link: https://www.microsoft.com/en-us/software-download/windows10

                  Regards,

                  Xavier A.

                  • 6. Re: Unsupported signal. Check device output
                    Intel Corporation
                    This message was posted on behalf of Intel Corporation

                    Hello DaveSanderson,

                    I was checking your case and would like to know if you need further assistance.  If so, please do not hesitate in replying back.

                    Regards,

                    Xavier A.