Most OEMs like Dell and Gateway hardware lock the motherboards. Try a Google search for your model of motherboard. You may just need to flash the BIOS. But that could also disable your Restore Disks.
yeah, i cant OC my sony computer cause they locked it too. yup it sucks i might as well buy a new mobo. but im just upgrading the cpu thats all i can do. whenever i thkn about sony it makes me puke: puke: im going to :unch: sony in the face