I have been having problems with my pc recently. I bought a mobo from ebay(10k+ positive reviews, its an actual german store)
Its a d2799 mobo, with a 3x8GB(kingston ktm-sx313k3/24g) ramkit, and a hynix ram.
I tried with 2x xeon l5638 and xeon x5570 cpus, pc turns on, recognises everything...