May 18, 2012

I've just bought Gigabyte's z68xp-ud4 and i5-3570K. Does Ivy Bridge require bios update? The rig powers on, boots after a few seconds in a loop and the display shows nothing. The mobo hasn't been flashed yet as it is brand new. :cry:
GigaByte GA-Z68XP-UD4 webpage
CPU support list says Core i5-3570K requires F6 version or later BIOS.

BIOS F6 release date was 2012/02/20 so there is a only a fair chance your motherboard was built AFTER that date with the right BIOS included.

If it was manufactured before Feb 20th you'll need a supported CPU to boot with to update the BIOS.
Judging by your symptoms I'm thinking that your board was built without BIOS F6.