Wouldn't have been overheating , is not near a heater and was not doing anything strenuous
Its covered by PC Performance and Warranty from PC World, do you think ifI take it in there it will be an open and shut in and out job, I don't particularly fancy sending it away for weeks on end.
I'm still surpsied as to how it would go though, as I was not doing anything at all strenuous (just viewing a web page).