Unfortunately, Windows 7 is only installed and no original data carrier thereby. Now, if, as in my case a backup / installation media is constantly terminated with an error, you have therefore a problem when no longer be able to reinstall the system because there is no backup available. Therefore, I draw from a star. Otherwise, I'm satisfied with the quality of the PC so far and can recommend it. If necessary, you have to have somewhere to buy a original Win7 disk to stop.