This operating system is not available as DVD, but as a link to download. Was delivered a product - Key via email. This Key was not working at the Windows website. The dealer has initially not noted. The instructions from the link from merchant pointed to all sorts of unnecessary third-party programs that are ultimately not needed. One need ultimately to unpack only one program. Please follow the instructions in the link does not, it is misleading. It was only when I received a 2 Key and a file for download from the dealer, I managed the installation of this operating system. You have to unpack this operating system and copy it to a second hard drive. From there, you can install it easily. I am very satisfied with the dealer. He gave me a 2.key transmitted via e-mail and a link for downloading. Also I love the operation - System Windows 7 rather than Windows. 8