Thanks for joining the NUC community.
I am sorry to hear that have had issues with your new computer.
At this point, I recommend the following steps to help with this no boot issue:
If your system still not booting, please contact Intel support for warranty options:
Normally 2GB RAM are not low voltage types.
You need to use 4GB low voltage DDR3L RAM to get display.
Same exact problem, I even bought my board on Mouser. Did you ever resolve this issue?