Remove the memory. As you then power on the unit (pressing the power button just once), do you see the Power Button LED flashing. If not, then I would say the unit is DOA and you should get it replaced.
You can get it replaced through point of purchase or via the RMA process with Intel. If you need to do it through Intel, you need to contact Intel Customer Support directly. Here is contact information based upon geography:
(You can also try the chat service (Intel Customer Support Chat Service), but this is limited to PST TZ hours)
Now, if you do see the LED flashing (it should be three flashes), then I would be looking at the memory as not being compatible for some reason. This is the exact same memory that I have and it works fine in my KY NUC, so it should work.
Hope this helps,