Sorry if this seems a silly question, but on various occasions for friends and family when there windows fails to function correctly I have tried to reload windows by using the repair option. My question is some times when booting with the windows disk you have the option to do a repair and on the odd occasion you don't. What dictates if the repair option shows or does not.
Thanks Fruit Bat /\0/\ for your help it seems to perfect sense. My neighbour PC was coming up with an error C:/windows/system32.config/system file missing or corupt and would not boot. so I tried to do a repair seems to be a full reload for him thanks again.