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Download Windows System Recovery Discs
What it does: The Windows Recovery Disc can be used to access a system recovery menu, giving you options of using System Restore, Complete PC Backup, automated system repair, and a command-line prompt for manual advanced recovery.
What it doesn’t do: You cannot use the Windows Recovery Disc to re-install Windows - it only fixes (not replaces!) Windows.
Why you need it: If you bought your PC from a major retailer, you didn’t get this CD with your hefty purchase.