Please mail me a copy of your Bios and I'll check it and patch it
If you don't know how to backup your Bios use Uniflash from a clean DOS Bootdisk or use awdflash buggy.bin backup.bin /pn /sy and send me the backup.bin file in ZIPped format > this awdflash command will not flash a bios but will backup your current bios but you can use Uniflash to backup too
We have already patched a file for the Biostar M5ALC with 256KByte size but it's date is 1/2000 - latest official Biostar Bios marked with "B" behind the version numbers as Biostar Bios - yours maybe has an "A" as OEM-Bios
http://wims.rainbow-software.org
BTW where did you get this biosfile from ?