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1 messages
1 total messages Started by Johnny Solar Tue, 02 Mar 2004 14:25
Unexpected reboot problem - Possible sollution -
#3689
Author: Johnny Solar
Date: Tue, 02 Mar 2004 14:25
84 lines
4635 bytes
> Hi
>
> Sorry for crossposting this, but I feel that this information has a better
> chance of reaching the people in need, when they use the various search
> engines to find an answer to a quite common, but so far, very mysterious
> problem.
>
> The problem im talking about is computers that for no apparent reason
reboot
> (no not because of viruses or worms).
> In windows, typically you would only see an entry in the system log like
> this;
>
> Previous shutdown was unexpected
>
>
> There are no other log entries, no bluescreens, no memorydumps, just this
> entry.
> When tracking the problem, people tend to find nothing wrong with their
> hardware, memory, powersupply or with their OS.
> There have been discussions about this subject, touching things like
memory
> problems, powersupply problems and so on.
>
> A very possible explanation:
>
> It may be that your motherboard has the types of capacitors/condensers
that
> fails after a while, we've had two different brands of motherboards with
the
> same problem on them, one VIA chipset mb and one MSI motherboard;
>
> Typically the computer started to reboot without warning at random times
> after about 2.5 years of troublefree service.
> It was nothing in the windows 2000 log except "Last shutdown at xx:xx:xx
was
> unexpected"
> After testing the computers to the best of my knowledge i finally
contacted
> IBM support who then changed the motherboard on my computer, no questions
> asked.
>
> The sollution to the mystery:
>
> You can see it easily by opening up your computer and check for the
> components that look like small barrels around your processor (can be
placed
> elsewhere too though), these "barrels" are called capacitor or condensers.
> These capacitors/condensers are supposed to be flat ontop (usually they
have
> a cross marking too), if they bulge upwards ontop (like a cone, tuch it
with
> your finger and feel it), it means they have failed, and your processor is
> no longer getting a stable voltage/current, causing it to reboot at random
> times, just like if you had overclocked it too much. The aim of the
> condensators as it was explained to me by the serviceman from IBM, was to
> keep the voltage at a stabile level towards the cpu, as it can fluctuate
> during uptime.
>
> If this is the case, contact your dealer and get a refund or similar,
> becuase it's not a user error, but a vendor error.
> The capacitor/condenser type was faulty produced and they are common
across
> a wide range of motherboards, so it can happen to IBM, Compaq, Dell and
the
> whole lot out there.
>
> This problem was most common in motherboards produced around 1999-2002 i
> think, but offcourse this may happen on some various brands today for all
i
> know.
>
>
> Anyway, I just wanted to contribute to a sollution to a very annoying
> problem for those it conserns, it's almost impossible to know/see it if
you
> aren't an expert, but now you know.
>
>
> Best regards
> Johnny Solar
>
>
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