Had the same thing this he fix was to de-install the drivers and the old ones seem to kick back in and give you the right drivers .. then Manually get the new ones and install after doing the de-install .. this give you clean install with the correct...
did you try the reset on the bottom of the systems? Also if something is hold that reset in it would boot like it is.. I would say some thing isn't seated right .. i worked on system in a Factory at one time things like this can driver you nuts and ...