Without knowing more I'd say it sounds like either 1)incompatible memory, or 2)neither of the monitors you tried support 1024X768.
What monitors did you try? What memory are you using?
Thanks for replying. The memory is Kingston 4GB 1333MHZ from Microsoft Store.
I tried 2 monitors. One is 1280x1024 using HDMI to DVI connection. Another is 1080p HDMI to HDMI. Both monitors support 1024x768. I can check model numbers tonight. But I don't think it matters.
Uh oh. The memory you linked to is 1.5v. All of the current NUC models require 1.35v memory.
Thanks! Looks like my other laptop can get a RAM upgrade... Hope it is compatible.