Yer ive done that twice to no avail but dont forget the os system is the latest upgrade to the original so would this make a difference ? am i right that the original factory settings would be before i did the upgrade ? maybe getting a little muddled hear but i think you know what i mean.as regards a repair..5 months old..no way..i'll want an exchange from the retailors..who are very quiet at the moment over this..many thanks