P20-552 suddenly turns itself off..

I have a P20-552 (PSP26E-025E9-S4) which is about 18 months old and has recently begun to misbehave.
In particular, after a few minutes of some processor intense tasks (video file rendering) it suddenly turns itself off. No warnings, beeps, messages - just stops. Very worrying - anybody any idea why? Fortunately the guarantee doesn't run out until 2007.
One other issue, every few weeks or so I discover that when starting up, the keyboard simply does not work. Mouse is fine as is everything else, as far as I can see. So far a simple reboot has resolved that problem but would this indicate that there is something wrong deep down or is this something we are meant to live with?
Many thanks in advance for any suggestions and help.
Brian.

Hi
Well, it could be a overheating issue if the unit stops without any messages. The temperature goes high if the CPU works with a high performance.
In this case the first what I can suggest is to check the cooling vents. Try to clean I with vacuum cleaner.
Its not easy to say why the keyboard issue occurs. Its strange because after OS rebooting the keyboard works properly. Well, maybe a fresh OS solve the issue. But this is a only a suggestion.
Regards

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Solved!
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blheath2010 wrote:
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