HP Z600 won't boot with matched pair CPU added

[MtothaJ]

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@SDH wrote:

Please keep us posted, and good luck on the project.  I don't get how there could be no contact on the pins.... it is purely mechanical at that level.

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There is the possibility that some CPU socket pins could be bent or perhaps broken off altogether, or the CPU latch is not giving the required tension for a solid connection.

Bent pins can be straightened out with a little luck and strong manual skill as well as the appropriate tools are required. As for missing CPU pins one can only hope these are the grounding pins - the CPU socket has many of these and usually even if a few are missing the CPU will still work fine.

[Sketchup]

Over the weekend I Cleaned all the extra thremal paster; following which I teseted all the combinations, starting with testing CPU-B in socket 0, which did booted, my system is running on the CPU now. Both CPUs and Heatsinks Work. the Issue is certainly on the motherboard side.

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@MtothaJ wrote:

There is the possibility that some CPU socket pins could be bent or perhaps broken off altogether, or the CPU latch is not giving the required tension for a solid connection.

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I took pictures of both sockets with my DSLR and there is no visible damage to the second socket's pins. Additionaly the motherboard is POSTing with both CPU, the issue a raises before boot since no BOIS are avaible. I will check to see is the tesnsion is correct, thats something I have to look into.

I have asked my boss if our in house Computer Maintaince team can look at it since the are reponsible for 100s of HP Z series but its technically not allowed hopefully I get a favor. Im not sure how to test a motherboard but from what I see, thats my problem. 

Thank you all for your help! I will post again if I ever find out the problem 😃

[SDH]

I'd be happy to capture a clone copy of my Z600 (version 2 with the later boot block date) which is running two X5765 currently.  Could it be possible that some arcane BIOS setting is holding you back?

You can capture your personal current BIOS settings via HP Replicated Setup, save those out, import mine, see if that helps, go back to yours.  All that works very well, and the Replicated Setup files are small .txt files that you also can print out and compare side by side.

PM me with your email address if you want me to send you a copy.....