Quote:
Originally Posted by fionaB
its going very strange., now and then its ust completely cutting out with no alarms etc, which is what is worrying me as the main fan has an alarm.
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This is a characteristic symptom of an overheating processor - the machine will shut down without warning, and if left off even for a few seconds, will switch on again and run for a while before switching off again.
All you probably need is a new CPU fan (just the fan, not a whole heatsink) - a 5 minute job to replace it. I wouldn't expect it to cost more than £10-15 to have it done for you, any more and you really are being ripped off.