Windows 8.1 Pro
Windows 8.1 gives you the familiar desktop with its taskbar and Start button, plus a beautiful new Start screen that you can customize with your favorite apps, people, and sites so that everything you love is just a tap or click away.
You also get built-in cloud storage for anytime, anywhere access to your photos and files, beautiful full-screen browsing with Internet Explorer 11, plus an exclusive collection of built-in apps like Photos and Mail, with many more apps available from the Windows Store.
If you want to run Windows 8.1 on your PC, here's what it takes:
Processor: 1 gigahertz (GHz) or faster with support for PAE, NX, and SSE2. Intel i3 core or better is best.
RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit) Minimum! 4Gb - 8Gb recomended.
Hard disk space: 16 GB (32-bit) or 20 GB (64-bit) Minimum! 250 Gb or more for apps and programs.
Graphics card: Microsoft DirectX 9 graphics device with WDDM driver