Windows 8.1 is the very latest operating system available from Microsoft.
Windows 8.1 incorporates a new look Start screen.
Start is the heart of your PC - it’s where you open apps and desktop programs, see what your friends are doing, and get to your favorite websites and files.
The tiles on Start can show updates from your friends, new email, app notifications, and the next appointment on your calendar at a glance, even without opening an app. And because everyone who uses the PC can sign in with their own Microsoft account, each person can personalize their own tiles, colors, and backgrounds.