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November 14, 2006, 9:20 am
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Presario 2700 Evo N180 laptop family. Basically, the heat sink
module has lost contact with the CPU, so it has become ineffective
(hence, the fan blows a lot, and the laptop will shut off if you run
an application with a high CPU load for any period of time). Other
symptoms of this problem are the laptop running suddenly gets very
sluggish; using Windows Task Manager (found by right-clicking on the
task bar), under the Processes tab, a "system" process
takes up 100% of the CPU time. This at first may seem to be a
software problem, but it is entirely due to the problem I described
The cause for this problem is a mechanical defect on the motherboard.
The heatsink module is held in contact with the CPU using four screws
that connect to four standoffs on the top-side of the Motherboard.
These four standoffs are connected to the motherboard using solder,
and the adhesion force weakens over time due to a phenomenon known as
metal creep. What happens is that the four standoffs come loose, so
the heat sink module has nothing to hold it down.
Happily, this is a problem that you can correct yourself. There is a
repair kit for this problem for sale on eBay. Enter the words
"Presario 2700 repair kit" and you will find a more
detailed diagnosis and a repair kit that includes the parts you need
to do the repair using only a screwdriver (no soldering required).
The kit also contains detailed pictorial instructions that show every
step of the repair.
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