This message was posted on behalf of Intel Corporation
Thank you for contacting the Intel community.
When the NUC power button is lighting up, is this a solid light or blinking light? If it is blinking how many blinks do you see?
Would you please provide us with your RAM part number and model?
Here is some information that I found for your monitor manufacturer that is very important:
Does your cable USB-C to DP come with this monitor or you purchased it separated? I’m asking because I’m reading at the ASUS website that it strongly recommended using included USB-C cable from MB169C+ original package to achieve best performance. You can check here:
You can see Q2 and Q11
Please try to follow some recommendations here:
NOTE: These links are being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.