Intel does not require the parts that are added (SSD / Memory) as the unit can be tested with their own spare / test parts to check if the unit has a defect or not.
If the unit has a defect they can exchange the unit without having to put the other parts in a new unit (or forget to send it back with a new unit).
Not sure but I would think it shoud have been shipped with the power supply because that came from Intel together with the unit and could be the problem when supplying not the correct power levels.
What brand, part number, size are the SDD and memory?
Have you tried to install the memory in a different memory bank?
note: I have not experienced system errors (blue screens) on my unit, but I am not running Windows on it.
The parts are:
CRUCIAL 16GB KIT (8GBx2) - DDR4-2133 SODIMM
SSD 600P (256GB, M2,80MM)
All came from EPP
No additional Bank connectors ....
I will try to remove the parts and test myself
It did not came with new Power supply - that this can cause power problem that eventually can cause crash (to my opinion)
Not sure if you tried this already, but you can try one Dimm first and check it in both memory banks and of course try the other one separate as well.
If you have a SATA SSD or HDD you should check that too, to eliminate those options.
On a side note you might want to check the SSD forum about the 600P firmware issue, but that only referred to the SSD speeds.
I'm not sure what you means that your NUC "began with blue screen problems? Did you have installed Windows and Windows crashes or just when you powering you NUC, it is showing blue screen just on begin?
If this is the second case, remove your SSD and try to boot into bios setting only with one memory stick at time. In this way you can check if problem is caused by SSD or one of RAMs.
Hope this will help