09-12-2016 09:13 AM
I have an Dell Optiplex 780 that I'm trying to upgrade the RAM after upgrading to Windows 7 64 bit. When I install the 4 2G sticks of CT25664BA160BA it won't boot. This post says that it's the correct memory for a 780 SFF
but the Crucial Advisor Tool lists CT5509173 along with some others. I understand if the tool is recommending something newer, but that shouldn't affect previous memory's compatibility. The CT25664BA160BA RAM was ordered some time ago. This is the last computer to be upgraded in long upgrade project. Please advise.
09-14-2016 03:14 PM
Thanks for contacting us today. It does appear that you have the correct memory for the system. CT5509173 is identical to CT25664BA160BA. We only use the part number CT5509173 internally to guarantee the compatibility of the RAM with your Dell Optiplex 780. I would advise contacting us directly to further troubleshoot this issue. Our contact info can be found in my signature.
05-12-2017 05:43 AM
I have an idea with which your system amy start booting without making any more issues:
I hope it can help you. If not ? Then check Dell Optiplex 780 Manual- guideusermanual.com/product-name-optiplex-780-manu
05-17-2017 12:24 PM
@qagyz Thanks for your reply to this message and offering up some suggestions for resolving the issue! Welcome to the Crucial Community.