The laptop has a Medion "special Bios". Other (Win7) operating system can not be installed. Quote Medion Service: "The Notebook MD 98472 from the series AKOYA P7627T is equipped with the latest Intel Bay Trail processor platform. Among other things, it supports the" Connected Standby ", letting you experiment in sleep mode mails and update applications / apps.'s This feature it is not possible to start operating systems or to install that does not have a UEFI-certified and Windows 8-compatible bootloader. The Windows 7 installation is not possible. You have more questions? We are happy to help. "!!! I have received from the service 3 in contradictory answers to some latency. In my view, the notebook is only limited use and the service inadequate to customers contemptuous.