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Re: Precision T5500 won't boot

Thanks for your attention to my problem.  In the end, I removed the wifi adapter card, GPU, and all hard disks with no change in behavior.  Then I re-seated one of the DIMMs and ... everything suddenly went back to normal (and remained normal even after I reconnected everything else).  In the meantime we procured another computer to serve the role of this one, so I now have a sandbox system on which to mess around with server-ish stuff. 

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