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I have an IBM e series x346 (M8840-11M) with dual xeon 3.0gb cpu's, 6gb ram and 2 x 36gb scsi drives running off the onboard controler, not the Serveraid which has been removed. My problem is that it will start up fine, all post and diags say no problem, then after anything from 1 hour to 12 hours, it will shutdown. It then shows VRM and NMI errors. I have checked all fans and am not getting any overheating. It can happen in the middle of a task, or when it is sitting idle, any ideas folks? regards,

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  • Greg Cooper Feb 12, 2010

    Hi,
    My problem is that it does all diags without an error. The only feedback from my logs is that it shutdown after running for 21 hours!. No breakdown details in the logs, it just turns off. The diag panel can show any or all of the following:
    CPU, VRM or NMI. I hae completely stripped this unit cleaned and checked all contacts, including the removable VRM, removed the cpu's and replaced them with new thermal compound. It then ran for 21 hours. Prior to that it had been cutting out intermittently after anything from 1 1/2 hours to 4 hours. I am wondering if I am getting a progressive breakdown of the motherboard itself, any further ideas are most welcome.
    regards,

  • joecoolvette
    joecoolvette May 11, 2010

    I don't have any documentation supporting the VRM on the motherboard, that is to say, whether you have dual VRM's, or just a single VRM. Your original post lead me to believe that your logs stated an NMI. Which is used to signal attention to non-recoverable hardware error/s. (Hardware component is bad) VRM was also listed. Therefore I concluded that one, or more VRM's are bad. (Based on if the unit has dual VRM's) To me a CPU error would be a logical error shown, as the Voltage Regulator circuit, or removable module in this case, is what regulates voltage for the Processor. Seems to keep coming back to a bad VRM. Haven't posted anything resembling a solution yet, so I am posting in the Clarification category. Would like you to take a look at the capacitors on the motherboard, and if the VRM's are not an Integrated Circuit, see if you can view capacitors on it/them. This would be in reference to Electrolytic Capacitors, of course, and not Solid capacitors. This link takes you to Visual Signs of Capacitor Failure, (Electrolytic) See if upon close inspection, you have any visual signs of capacitor failure on the motherboard. Plus if the VRM, or VRM's, are not of an Integrated Circuit design, (Plus not enclosed in a case that you cannot open), see if there are any visual signs of capacitor failure.http://www.capacitorlab.com/visible-fail...

  • joecoolvette
    joecoolvette May 11, 2010

    VRM = Voltage Regulator Module. Regulates the voltage for the Processor. You have dual VRM's as you have dual Processors. NMI = Non Maskable Interrupt.http://en.wikipedia.org/wiki/Non-maskabl... Would appear one, or both VRM's are weak. Just my thoughts.

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Check windows logs!

Posted on Feb 11, 2010

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The answer is No

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