Here's how you can reinstall Windows 8. 1. Open the Charms menu. 2. Go to Settings. 3. Go to Change PC Settings. 4. Go to General. 5. Go to the "Remove everything and reinstall Windows" option. 6. Click the Get Started Button.
For more, see the original article at the link below.
Refresh, Reinstall or Restore Windows 8 | Help Desk Geek