Won't help you much, but I had the exact same situation. The difference being that i ran Linux. You might try to do what I did and longpress the power button (like you'd want to reflash the bios) to see if you get sound. If you do, then at least you're booting into the firmware. Still, I'd advise you to RMA, seems to be a hardware defect.
Thank you for joining the Intel communities.
When you turn on the system how many blinks do you see on LED close to the power button?
Unplug and plug the HDMI/displayport cable and reconnect it.
Disconnect the power adapter, the hard drive and use only one memory stick on the button DIMM.
Reconnect the power adapter and turn on the system.
Try also what
I have tried all the above and it won't show anything on the screen. When powering it on, the HDD activity light does not light up at all. I tried to submit a ticket with that URL and get a "System Unavailable" error after putting in all the information. I also tried chatting with, but that is showing representative is "Not Available" currently as well. I will keep trying.
I am on my 2nd replacement, that means third NUC. The 2 previous ones died, one from WHEA (2 weeks old) and the other would not boot anymore, it only the led solid blue and fan running full speed, no video, no USB, no BIOS...(4 days old).
So I had:
NUC6i5SYH with 2 sticks of Kingston KVR, not a KIT.
Samsung 850EVO m2 sata
I reused that RAM and the SSD in the 2nd NUC.
Although I still think the RAM was not the cause of the dying, I bought a 2x8GB KIT of Crucial RAM, to use in my 3rd NUC. Just to be sure.
The kit was recommended by my retailer.
However, the Crucial KIT got lost in the mail for 5 days, and in the meantime my 3rd NUC arrived, so I reused the KVR again, installed Windows 7 Ultimate, did the Windows upgrade to W10 to lock my Windows copy in, and updated the BIOS to 0036 and left all settings to their defaults. No problems at all.
Finally the new RAM arrived, I took out the KVR and inserted the Crucial sticks, and at the same time I added a 2TB Samsung HDD in the sata slot for data storage.
That unit has been running a charm for 16 days now, no glitches, but I keep monitoring temps and fan speed, still I keep my fingers crossed...
If it continues running rock stable like this for 2 moths, I'll move it away from my desk and use it headless as a download station and media server.
Pretty much what happened to yours. Ran Linux fine for a week, then started randomly freezing. Then the HDMI port gave up. I dug up a mDP -> HDMI converter, that got me into visual BIOS once, then it froze again, and I had no visual on both ports. Then i tried emergency BIOS flash, but never got any video out of it, at which point i decided that it's dead. I shipped mine to Intel today, and am waiting for a replacement.
Thank you for all your contributions on this thread and I hope you can have a better experience with the Intel® NUC from now on.
Ahhh, crap.. I was hoping that the resolution for this issue wasn't to send the unit back for RMA. My second NUC has just developed the same problem two days after receiving it, after waiting three weeks for the RMA on my first unit to be processed...
I'm really disappointed that it looks like I have to go through another RMA process...