Hi @pascallx. I am sorry for the issues you've experienced with the upgrade you have received. Are these the only two memory modules you are installing together? What happens when you install the RAM one at a time? It appears that the the part ct102472bd160b.18fp should work in your system, but some serves are very picky and might require matched parts. You could try installing them in different ports, but if you are still running into issues it might be best to return the part or purchase 2 parts the same. Please let me know if you have any other questions or concerns.