Start up quickly
Customize your Start screen with Live Tiles
Stay safer with Windows Defender
Encrypt your data with Bit locker
Windows has also made changes to make your PC more secure by boosting its existing security features and adding "SmartScreen," which acts to prevent suspicious programs or apps from being installed or running on your machine. Finally, Windows 8 also gives you the ability to "refresh" itself to give users a new starting point and a cleaner version of Windows.Vibrant and beautiful, the Start screen is the first thing you'll see. Each tile on the Start screen is connected to a person, app, website, playlist, or whatever else is important to you. Tiles light up with the latest info, so you're instantly up to date. In one glance, you'll see that photo you were just tagged in, tomorrow’s weather, and messages from your friends.