Again… almost 99% sure that its not a bios issue, was common on these chipset/motherboards, a power rail/vrm fail. Probably you will notice that the southbrige and the cpu wont even get hot.
Here is a pure extracted bin/rom for programming and guidance in how to extract it.
[Problem] How to Modify an MSI Bios EXE file - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)