UBCD4Win is a bootable CD which contains free tools and utilites to repair, restore, or diagnose almost any computer problems based on based on Bart’s Preinstalled Environment. Bart’s PE is an application that allows you to create live bootable CD/DVDs with preinstalled applications of your choice. UBCD4Win gives access to the best of the best tools and utilities in one location for the following categories:

Anti-Spyware
AntiVirus
Internet Browsers
DVD/CD Burning Applications
Disk Backup, Cloning and Ghosting tools
Defrag utilities
Partition utilities
Encryption & Security utilities
File Management
Recovery software
Registry tools
Network Tools

Any regular computer user should have this bootable CD handy for unexpected disasters!

Download Ultimate Boot CD for Windows here and make sure you read this howto guide thoroughly before builing your own repair & recovery CD.

Note: Booting into Windows Vista using UBCD4Win is not recommended.