6 Replies Latest reply on Feb 1, 2015 7:12 PM by robertoschler

    No video signal on my NUC D54250WYKH


      I have a new NUC D54250WYKH.  It is connected to my Acer v198w via an adapter that converts the NUC's HDMI mini jack to a standard VGA adapter out, which then connects to the VGA IN on my Acer monitor. The very first time it powered on I got a startup screen.  It asked me to fill in a few questions like locale, time zone, etc, and that all went fine.  Then it asked me for my Windows product key to activate it.  While I was searching for that key the screen went blank with the PC still on.  No matter what key combinations I pressed, the video signal did not come back.  I eventually powered down by holding the power button down for 5 seconds.


      Now I can't get a video signal no matter what I do.  I tried powering on while pressing the F2 key multiple times to get the BIOS.  But it doesn't work.  I assume by the patterns of disk activity shown by the disk activity LED that the unit and keyboard is indeed working.  I say this, because during my F2 attempts, the LED flashes briefly and then stops.  If don't press F2 during a power on, the hard disk is active for about 30 seconds as it would be if I were booting up windows.  If I tap random keys in this second context then I do see the hard disk LED flash a bit as if something is reacting to my keypresses.  However, no video signal.  If I retry the F2 attempt then again on startup I get a short burst of disk activity then nothing, as if the system is entering the BIOS.


      So it appears as if the system stored some setting about my video configuration that is preventing it from finding a usable state again.  What can I do to fix this?  Remember, I may be getting into the BIOS but I can't see what I'm doing now.

        • 1. Re: No video signal on my NUC D54250WYKH

          Hello robertoschler,

          Based on your description I would the problem is the video adapter you are using. We have received many reports from customers and I personally have tested one adapter like this (HDMI-VGA) and it did not work at all.

          The reason of this is that the HDMI sends digital signals and the VGA adapter can handle Analog signals only. We do not recommend using adapters but if you would like to try again perhaps an active video converter can do the trick.


          Kevin M

          • 2. Re: No video signal on my NUC D54250WYKH

            Thanks Kevin.  I have a mini-HDMI to HDMI cable on order now so I can try it with my HDMI monitor.  Fingers crossed.



            • 3. Re: No video signal on my NUC D54250WYKH

              Hi Kevin,


              Today I received a bona fide mini-HDMI to regular HDMI cable and attached to my ASUS VW246H monitor.  Unfortunately nothing's changed.  The system still behaves as if it's working, but just no video signal at all.


              Is there a way to "factory reset" the NUC so that it goes back to the state it was in when I first did see video, the first time I turned it on?  My guess is that it's got some video setting set that won't let it rediscover the current monitor and until I clear it I'm screwed.  Note I did try cycling the monitor inputs using the button on it for that, no luck.  It keeps saying "no video signal".



              • 4. Re: No video signal on my NUC D54250WYKH

                Try the steps mentioned here:



                I think if issue persists, you should contact our support phone team for them to help you with a possible replacement:



                Kevin M

                • 5. Re: No video signal on my NUC D54250WYKH

                  Hello Kevin,


                  I need this for the RealSense contest and the deadline for that is February 15th.  I'm a finalist in the Ambassador lane.  To wait for a product replacement would really hurt.  Isn't there some kind of "hold this down while booting up",etc. kind of step I can take to reset the unit?


                  I really believe it's intact.  For example, although I can't see anything, if I press the STANDBY key on my keyboard it does go into standby.  I can see a brief disk write and then the power light flashes as it should in standby mode.  Then if I tap any key the power light stops flashing and there's another brief pulse of disk activity as the system comes back online.  I can repeat this as many times as I like and it always works.


                  Is there a short list of monitors that are absolutely known to work with the NUC? I'd be willing to buy one just to see, so the less expensive the better.  If you know of a reasonably priced one that definitely works, please give me the manufacturer/model and what connector I should use (HDMI, DPI, USB, etc.).




                  • 6. Re: No video signal on my NUC D54250WYKH

                    I solved the problem and I'm leaving my findings here for others who experience the same problem.


                    - I had to give up on the micro to regular HDMI cable.  During my web searching I believe I read that LCD monitors don't have the necessary signal converters to use HDMI directly like an HDMI TV can.  I wish I could find the reference so I may be incorrect on this.  But in any case, HDMI to my PC compatible LCD monitor was a complete failure for me.


                    - To solve it, I got an Display Port to DVI cable.  I simply plugged the Display Port end into the NUC and the DVI end into my LCD monitor and it worked great the first time and every time after that.




                    The only thing I can figure is that the very first time I turned on the NUC the BIOS or some other persistent setting was in a state that had it put out a signal that worked with the original VGA output adapter I tried at the very start.  Once it rebooted and something got saved, that path never worked again.  So the moral is, to get the NUC working with an LCD monitor the safest path is to use the Display Port connected to an LCD monitor's DVI input.  Fortunately the d54250WYKH NUC like mine has a headphone out jack so unlike other older NUC's I still can get sound output easily.