Satellite Pro A300 crashes with blank screen

I have a Satellite Pro A300, AMD CPU, ATI graphics, Vista.
The system worked fine for a year but a few months ago it started crashing, the screen went blank, not blue, anything running, like music, stopped. This can happen after several hours or minutes, or even whilst it is re-booting. All my software is up-to-date, both from Microsoft and Toshiba. I have rebuilt my system from scratch and the symptoms came back.
At first I thought this might be a heat problem but I have monitored this but I don't think this is it. It has crashed seconds after leaving sleep mode when it has not had a chance to warm up.
Anybody got any ideas?
Simon

Hi buddy,
Theoretically it could be an overheating problem so the screen went blank due built in overheat protection...
You should try to clean your notebook using compressed air spray. This could blow out the dust from the cooling ventilators and therefore its not necessary to disassemble the notebook.
In your case I would recommend reading this article:

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/ssstsg
Spelling was edited by: ssstsg

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Message was edited by: TinkerBell

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Message was edited by: miainphillips
Message was edited by: miainphillips

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Satellite Pro A300 crashes with blank screen

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