"We've built two new features in Windows 8 that can help you get your PCs back to a 'good' state when they're not working their best, or back to the 'factory state' when you're about to give them to someone else or decommission them," said Desmond Lee, a Windows program manager. Hitting the Reset button will remove all personal data, apps, and settings from a PC, and will reinstall Windows from scratch. Activating the Refresh mode also reinstalls Windows, but preserves the user's personal data, most settings, and Metro-style apps. Third-party apps need to be reinstalled because "we do not want to reinstall 'bad' apps," said Lee."