From what I see that box is made/optimized for win10 …
Probably you should take a look at bios settings and try to ajust them according to “safest” settings and try again.
Looking on other linux forums that describes similar issues I found that adding extra option to boot sequence helped.
Try adding this parameter when you boot the NS installer:
You can find more info here http://docs.nethserver.org/en/v7/installation.html under the Install > Optional boot parameters
On how to add the parameters when booting the installer.