That doesn't surprise me, Lenovo seem to be working hard to become the next HP in terms of hardware quality. I recently spent hours and hours trying to get a Thinkstation to boot with ECC memory that it specifically listed as supporting. The Lenovo engineers seem to basically get the motherboards to the point that they can kind of boot with the exact hardware the machine ships with and then completely give up. The smallest hardware changes would render that machine unbootable, including inexcusable things like changing graphics cards (Nvidia -> Nvidia too, just a model change).