In my experience with DLP displays it always needed overscan correction. Since I have not connected the NUC to such a display yet, check the Intel Graphics properties to see if there is anything there to correct overscan.
http://www.intel.com/support/graphics/sb/CS-034397.htm
Look under the Question:
My HDMI TV overscans where the sides of the desktop screen are not visible. How do I fix this?