I would say Intel servers are not the stablest thing in the world. When I assembled my server from a decommissioned server, I got all sorts of errors, mainly on RAM. I had to flash the BIOS, and rebooted it many times. Finally it booted up with warnings.
I know it is frustrating, but you'll have to keep trying. You RAMs should likely be ok. Try others RAMs if you can. Remember the RAM has to fill certain slots first.