Windows 8.1 System Builder OEM DVD 64-Bit This operating system is eligible for a free upgrade to Windows 10 when available. More details below. The Start screen. Personalize your Start screen with your favorite news, friends, social networks, and apps. Customizable colors and backgrounds and four different tile sizes make your device as unique as you are. The apps you want. In addition to great built-in apps for e-mail, people, photos and video editing, you can also download thousands of popular apps from the Windows Store, including Netflix, ESPN, Skype, and Halo: Spartan Assault. It plays as hard as it works. Windows 8.1 gives you the power to quickly browse, watch movies, play games, polish your resume, and pull together a killer presentation - all on a single PC.