Graeme Dargie wrote:



My grandmother had a HP that just died too.  My brother took the first stab
at it, describing it as a likely "DC-DC converter" problem, and I was seeing
indication of a bad seat on the CPU.  It was working just fine and for the
CPU to become unseated is not likely.  I tore that machine apart until I
couldn't figure out how to get the top or bottom plate off that surrounds
the motherboard.  I didn't fix it, but we all gave up and she went and
bought another system.


The DC-DC converter is what takes the 18V (or whatever) the mains/battery
supplies, and breaks it out into the 3.3V, 5V, 12V, etc needed to power all
the various components.

Someone pointed me to this service manual http://tinyurl.com/de6luh. You might find one for yours on the HP site. I suspect something similar has happened to mine, I'm going to take it to a shop for advice, some of them will do component level fixes which is cheaper than a new motherboard.

Chris
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