I want to restore my motherboard to stock settings so everything is back to normal like once I built my system. Sorry I'm not that clear about all of this. New to this who bios deal.
Oh well then in that case you don't need to flash the BIOS, as your systems BIOS doesn't change unless you want it to.
You can just go into CMOS setup by holding down the proper key (it's usually either the delete key or F1) as the system is starting up and there should be a choice where it says something like "Load default configuration", hit enter on that and then just save it.
This reverts all changes made to BIOS back to the way it was when the system was built.