Try bios recovery: BIOS Recovery Update Instructions for Intel® NUC
Download update bios AY0041.bio file here: Download BIOS Update [AYAPLCEL.86A] . This file shall be saved on USB stick formatted to FAT32. If this stick was used for Linux, fix its format with SD Formatter tool: SD Memory Card Formatter for Windows Download - SD Association . This tool shall be installed in Windows and then you will be able to format your USB.