When flashing your BIOS on the ASUS P2L97 - DO NOT - Use ASUS aflash.exe utility available on the Asus sight.
ASUS posted a bogus flash ver and it does not work with
Award Bios ver 4.51PG
This took me a few hours to figure out.
The zip file contains
Tool to help identify your BIOS.
PFLASH.exe Flash utility that works.
LX2i1009.awd – Asus BIOS update.
update for drives over 32 gigs.
See ASUS for the rest of the flash utility enhancements.