hoping i packed the motherboard all right
as in, everything in it incl i/o shield (which i almost forgot), put the rma form in the box, it's well packaged
... but now i'm getting paranoid with "what if the motherboard is ok and it's actually the processor"
because that was the only thing we couldn't test, because nobody has another am4 motherboard or another am4 processor
(also the gpu and ram are known good so it's not those)