MB only boots locked HDD, can´t enter bios (password protected)


I got a motherboard with AMI BIOS that only boots a locked SATA HDD, if you put a different hdd than the locked one it wont pass the POST screen.

I have tried to enter the bios menu pressing random key combos on the keyboard and a few times the password prompt showed. I tried the default AMI passwords without luck.

Could anyone help me on modifying the bios in order to boot a non locked HDD or to enter the BIOS to change the boot device ? (the system will only boot from this locked hdd, not even from usb)

Here is the bios :


mirror :