The technicians say that it needs a BIOS update, and the lesser techie was told to let the greater techie do it, and he comes in on Monday. (The reason I can't do it is that I would have to install a 7000 series CPU, do the update, then put my 9700X back in, and I don't have a 7000 series CPU.
The board is for Ryzen 7000/8000/9000 but was initially released for 7000. I thought I got a rev2 but I got a rev1 and it has an old BIOS.
So the following guesses were wrong:
* Momory mismatch (and misspelling)
* Power supply
* Some cable not seated
* PS or cpu not seated
* Busted motherboard (close)
* Busted CPU
* Jumper slipped out of place
* Standoff in wrong place shorting the motherboard
* CPU pin bent
nostr:npub1jg8yxcaske0gjk5uzc20nldk9rmpvfrd0gecm3nps5cdrznk8ursawjvz7 wins!