the EnableMachineCheck setting doesn't work any longer. Beginning with the Feb CTP Build 5308 you must have an compatible Dx9 card with WDDM drivers. Do you have the latest driver installed? 32Bit: http://downloadcenter.intel.com/Detail_Des...p;DwnldID=16777 64Bit: http://downloadcenter.intel.com/Detail_Des...on〈=eng