It’s a gigabyte ab350m gaming-3 rev 1.0. it boots grub fine but then crashes right after displaying “loading Linux 6.x”, CPU led flashes then dram led stays on, I have to turn it off with the PSU switch.

Either it’s a rev 1.0 bug which is a thing on those motherboards, or the CPU (or igpu) is defective.

superuser.com/…/proxmox-doesnt-boot-after-cpu-cha…

I’m currently waiting on support from both the seller and gigabyte but I don’t expect anything out of it, though I’m still yet to test it in a different motherboard.