I understood from a translator that your system hangs at the BIOS splash screen when having your UPS system connected to the unit. I was wondering if you have attempted to disable the Quiet Boot in BIOS to see if we are getting any messages behind the splash screen.
Additionally, I would recommend checking if your system is running with the most recent BIOS release 02.04.0003
You may also go to System BIOS > Boot Options > USB Boot Priority and set the value to “Disable”; and then, go to Advanced > USB Configuration > Make USB Devices Non-Bootable and set the value to “Enable”. Keep in mind that in the future you may need to disable this option to boot from External USB drives such as optical drives or flash drives.
If this situation remains after these changes, I would recommend contacting our Intel Customer Support team for proper follow up.