Hello ПМоро,
Thank you for posting on the Intel® Communities.
Try accessing the BIOS with these steps:
Navigate to settings.
Select Update & security.
Select Recovery from the left menu.
Click Restart Now under Advanced startup.
Click Troubleshoot.
Click Advanced options.
Select UEFI Firmware Settings.
Click Restart.
These steps should take you to the BIOS screen, once there press F10 to load the defaults.
If the reboot behavior does not let you follow the steps above, try the minimal hardware configuration in your Intel® NUC(one memory stick, hard driver, mouse and keyboard).
Amy C
Intel Customer Support Technician
Under Contract to Intel Corporation
