@kahlenberg Thanks for contacting us. I am sorry for the issues you've experienced with your upgrade. From the information we have it appears that your system is only able to be upgraded to 8GB of memory, not 16GB. This is most likely why you are experiencing issues, not because of the density of the RAM. However, the low density part number for a 16GB kit is CT2KIT102464BF160B. Please let us know if you have any other questions or concerns.