EVGA nForce 123-YW-E175 - Manual (Page 57)

Award POST Codes
Code Name Description
B0 Spurious If interrupt occurs in protected mode.
B1 Unclaimed NMI If unmasked NMI occurs, display Press F1 to disable
NMI, F2 reboot.
BF Program MCP To program chipset from defaults values
E1-EF Setup Pages E1- Page 1, E2 - Page 2, etc.
FF Boot