I asked him for the stuff that came with it, and he said "what the big bit of paper telling me how to plug the monitor in ?".
Looks like he does not have a real CD, but, I hope its in the bottom of the box somewhere, I have told him to go back to the shop and tell them he is going to report them to M$ for stolen software if they will not, its worked for others
Nowadays PC vendors often do not include a physical Windows CD; but instead have an image of it on a restore partition. Generally they have instructions on how to burn copies of the Windows and software discs in case the OP wants to repartition the drive to it's full capacity.