Original Countryman

My turbo has stopped working there is no boost pressure at all but no other symptoms, I don't get any smoke or idling problems etc The car drives fine and no other problems just no turbo, the green lights don't work either which tell you your boosting. Has anyone come across this problem before? I've checked all the pipes and they seem to be ok no oil leaks anywhere. I was driving on the motorway doing 70+ when turbo stopped working suddenly, there has been no other side effects since it stopped working so basically it's like driving a Glanza S. If anyone has any suggestions they would be greatly appreciated Thanks