If you have a MacBook with a broken screen, you can turn it into a slabtop for a much lower price than replacing the screen. And if you have a fairly recent MacBook with a powerful M1 chip , a ...

(Re-seating RAM, taking battery out and holding down power button, pressing FN + F2 at boot) Can not boot to a rescue disc, because I can not see the screen. Need some ideas, before parting out.