I've noticed strange problem with this mobo - when I touch voltage regulation for CPU, when I set another value than AUTO my machine doesn't even boot :/ . It happens even when I leave all other values on def. settings :/ I've tried bios from 0402 to 0902.

Has anyone noticed this problem?? May it be bios issue or mobo failuire?

From bios 0602 I haven't noticed vDrop Voltage Calibration is working