It only said to set multiplier to 6 or 7 to test the highest maybe the memory or highest htt the mobo can do I believe. You shouldnt be setting it lower than default. Or at least I wouldnt.
In terms of your bios. I have no clue where it would be. Its gotta be there somewhere id think, or that mobo is terrible.

Just look around for CPU settings. I gotta be in there somewhere.