Thinkpad p1 gen 6 no display

Bought a headless thinkpad p1 gen 6 with i7 and rtx 4060 (it has no display and no display cable. when i connect it to hdmi it does not output anything. They keyboard lights up, i can hear the beep when it enters the bios after pressing f1 but no display whatsoever. How can i make it display, or at least check if something is faulty?