Board won’t boot into system (follow up)

This is a follow-up to Board won't boot into system nor flash
It’s still not working despise everything I try.
At this point, I just want to send the board back for repair because the warranty is expiring soon.
NVIDIA support told me I have to get a mod’s approval from this forum to get an RMA. What options do I have?
Thank you.

Did you buy a nano to validate your host?

No, but we have another NX in our school, that one works fine.

Ok, then please RMA this problematic module.

Thanks Wayne