I have a laptop, an HP 250 G5. It is running latest version of win10. My set up is laptop to projector via HDMI and the aux out of projector to speakers. When I plug the laptop into the projector the video i am playing starts fine but there is no sound and then after a few minutes the sound will suddenly start up. I have reinstalled the intel drivers, changed cable and it has made no difference. this has also happened with a different projector.