Jetson_orin not booting up

Hi, I have received the Jetson AGX Orin and I tried to boot it from external SSD following this guide ([To setup a flash drive manually for boot up) and when i tried to do the last step and powered it up it came up with blank screen. To check if it boots up from emmc i took out the SSD and powered it up but it did not boot up.
Can you please help?

Are you using the devkit or custom board?

Before you did the steps from this guide, did you confirm that the device can boot successfully from eMMC?