I have a dell r230 I tried to upgrade the ram in to its max of 64gb. But putting ram in any of the 4 slots triggers unsupported dimms error. And no post. Ram in: 2x8gb (16) PC4-2666V-ED2-11 HMA81GU7CJR8N-VK to AD 1913 new ram. 4x16gb (64) PC4-2666V-RE1-11 HMA82GR7AFR8N-VK to AC 1909 Installing 1 2 or 4 sticks triggers unsupported DIMM error. Both are pc4 2666 ECC ram. Both old and new is sk hynix Korea. Why doesn't this ram work and can it be made to work? I believe I'm on newest bios if not can someone point me to the bios update link for R230.