Intel NUC D54250WYKH Memory issue

Hi i'm trying to get my newly purchased NUC D54250WYKH up and running and keep running into issues.

I have not been able to boot the NUC at all and the led code seem to tell me it is a memory issue (3 blinks, pause, 3 blinks, pause ...)

I am using 2 KINGSTON KVR16LSE11/8 DDR3L memory modules and i have tried them in all concievable combinations 2 at the same time, both alone in upper slot and both alone in lower slot, but i still cant seem to boot. I have no more memory modules to try with and i have no other computer in which can verify the memory modules.

Is there any way to make sure that the NUC is not DOA? I can't boot the NUC without memory in it either as that produces the same issues.

I greatly appreciate all help.

Cheers

Mikael