Try to use bios patcher v6.00alpha15 - it requires some utilities and files (microcodes, etc) that are available by that link. Of course, you may flash patched BIOS to other chip - if something goes wrong (and it can because patcher with AMI support still in alpha version), you can easily revive your board.
Also patcher potentially can fix some BIOS errors.
If patcher doesn't help - you may try to replace microcodes by AMIBCP manually.
Try to use bios patcher v6.00alpha15 - it requires some utilities and files (microcodes, etc) that are available by that link. Of course, you may flash patched BIOS to other chip - if something goes wrong (and it can because patcher with AMI support still in alpha version), you can easily revive your board.
Also patcher potentially can fix some BIOS errors.
If patcher doesn't help - you may try to replace microcodes by AMIBCP manually.