a few days ago i adquiered a lenovo T440P, try it and i notice its suddenly shutdown, after a few times i notice that it was happening every 30 minutes. the windows device manager didnt show the intel ME, and it was imposible to instal drivers. i updated the the bios but it still is shutting down so i bought a SPI programmer dump the both bios chips and tried to follow this recomendations (by plutomaniac) in the following thread: