If you open after burner and go thru the settings there is a check box to enable voltage controls. This will ungray the voltage controls on -most- models. Some models are hard locked in the bios to not allow voltage changes, even to lower. A part of the problem though could well be... Did you play during the summer last year? :P Ambient temps can make quite a difference for a laptop. My mbp is pretty much useless during the summer for gaming ;/