Hello Jameswhy ,
Thank you for joining the Intel communities.
Could you please post the RAM part number?
Do you have any fan activity?
Have you try using straight connection from the NUC to the monitor, Mini-DP to a DP monitor or Mini-HDMI to an HDMI monitor?
I’m mentioning the straight connection because that’s what we recommend and using this adapter could cause interference.
You can see the adapters we have validated at the following link:
I did some testing yesterday and discovered the problem seems to be in the upper RAM socket.
I have two Crucial 8GB chips, but when I inserted a chip ONLY in the lower RAM socket, the NUC booted up and responded to my monitor and keyboard.
With both chips inserted, or just one in the upper socket...blank screen.
I have not yet installed an OS.
What shoudl I try next?
Thanks for your help.
With the part number you gave me it should be OK to run with this unit, however, it is not in the tested memory list from Intel as you can see here:
There is always a risk using untested memory but, generally, if the memory meets these specifications, you should be ok.
Have you tried with different RAM to try to isolate the issue or do you have another system to try these memories?