Are there any free operating systems that I can boot from a CD to recover my data?

[AWS]

My computer won't boot, not even into safe mode, and I've misplaced by Windows XP CD. Is there a free program or operating system that you folks know of that I can boot from a CD (without having to reformat or partition anything) so I can recover my personal
data? At this point, recovering my data is all that I'm interested in.

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