I am trying to upgrade my box to Windows 10 Pro. I created the installation file with Rufus and inserted in box. Immediately received the message "Part EFI Remove media and reboot." I then recreated the installation file with Rufus using MBR and UEFi. I re-inserted the USB. Windows 10 starts installation. I answered very questions, finish installation and then does the final reboot. Box keeps running but nothing shows on the screen. I have tried numerous times with the same result. Why does the monitor that showed all the installation process will go blank after completion. In fact the monitor states no activity and shuts down. Please let me know what I have to do to get the system working on the monitor?