I had the same problem, only my pc broke the illuminator on the screen so it looks but it looks dark and I have to illuminate it with something, something you can try is to put Pendrive on another PC and calibrate it from there and then put it on the laptop, although sometimes that does not work because it is put back on its own, the other is if the laptop has an HDMI output connect it to a Screen for HDMI, it should shoot video since batocera prioritizes HDMI, the problem is if they installed batocera on the laptop’s hard drive and they do not have HDMI or screen, then the matter is done Impossible, something to keep in mind, when you start the laptop, at least at the first start, close the lid of the PC because that’s when the PC detects the HDMI or VGA and uses the auxiliary video.