Just curious guys, but does Compaq comes with a Windows CD or just the recovery partition?

My bro bought a CQ35, so I asked him if want I can reformat for him, so can have 2 partitions and also remove the HP add-ons.

But no Windows CD how to reformat? It does come with a Windows 7, and there's a sticker at the bottom too.

When I bought Dell it shipped with a Windows CD, albeit from DELL itself.