Same problem with Frozen Drive in a Gateway 310 Series, even changing BIOS settigns, but locked succesfully in my other real computer with Phoenix BIOS, but, it was with Autodetection, maybe is about the Auto mode allowing to modify values in this board.
I'm thinking on vmware, getting my RelaXserver down to lock hard drives, does not really like to me, so better use the vm, it has a phoenix BIOS too...