[Gllug] Spontaneous shutdown of laptop

[Benjamin Goodacre]

If it is suddenly turning off my bet would be the internal 'PSU card' is
failing. It takes power from the mains if it is plugged in and charges
the battery and directly feeds power to the laptop. Compiling can
involves high CPU - high voltage usage. If it was a desktop I would be
more convinced that it was a PSU issue as with a laptop there is more to
go wrong such as the battery and overheating as you stated.

Was it plugged into the mains at the time or running just on battery?

Thanks,

Benjamin

-----Original Message-----
From: gllug-bounces at gllug.org.uk [mailto:gllug-bounces at gllug.org.uk] On
Behalf Of John Winters
Sent: 06 November 2009 08:31
To: Greater London Linux User Group
Subject: [Gllug] Spontaneous shutdown of laptop

My laptop - a Lenovo 3000 N200 - did something rather odd this morning.

I left it doing a long compile (OK - it was a kernel compile) which
usually
takes it about 35 mins.

When I came back it was powered off.  Not just crashed - switched off.
It
had clearly shut down uncleanly because the file system journals had to
be
replayed when I turned it on again.  I've checked the battery and that's
fine, and in any case it was running from mains power.

My only thought is that it might have been switched off my some sort of
thermal protection device built into the laptop.  It's a couple of years
old, and I've never opened it up to check for dust build-up.  Is this
something which a laptop is likely to contain?  Can anyone think of
another
reason why one would spontaneously switch itself off?

I didn't have time to investigate further this morning, but will
probably
open it up tonight.

TIA,
John
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