Thinkstation S30 b7 code after ram upgrade

So i just received 4 rdimm 16gb hynix memory sticks. When installing 2,3 or 4 of them i get the b7 error code. I installed each of them one by one to see if one was defective. This was not the case with one stick installed the system would boot. I am running the latest bios for the 0569 s30 station. Does anyone have an idea to get all 4 sticks installed?