Switch lite won't boot correctly

I have a switch lite that won’t load the HOME menu. I can access the maintenance mode and have updated it (to 16.0.2) and have initialized it several times.
It shows the Nintendo logo, then the Switch logo, then gives the error “Could not start the software” without an error code.
I do have a spare motherboard I could scavenge parts from.
What are some possible steps to fixing it?
(btw it’s stock and not under warranty)
(it also charges fine, i don’t think it’s the fuses or m92)

Hi I am having the same problem.