Some of those cards had moved a little owing the the peg and slot fitting system being inferior to one using screws. There is no dust anywhere that I can see as I gave it a good blow out yesterday with a can of compressed air.I have now moved the cards so that each one sits correctly with each peg right in it's respective slot.Do you think that it might be worth putting back what little I have taken of(fan cowl and side of computer)to see if all is OK?
Obviously I do not want to remove the motherboard if this cures the problem especialy as I have no experience of such work.Cannot do much more for a bit as I have to go and collect my wife from the city
With best regards,
Dave
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