What happens if you plug the hdmi for the lcd into the same output as the one for the projector. Just to see if it too has the blue screen. If it does then it helps narrow the issue to equipment, if not, then maybe it is the hdmi to the projector. I would hate to go as far as saying it is the projector as that would be the only other piece of equipment in this mix beyond that. So yeah, plug the lcd into the output that is used for the projector when this happens and report back. process of elimination at this point.