I've had XP Pro for awhile. Had installed it on 2 computers before and then reverted back to Windows 2000. Now I've got a newer computer that came with XP Home. I installed XP pro over that, but it only gave me 30 days without entering a different Product Key than the one I had.
I had tried Uninstalling XP Pro, but there was no option to do so in the Add/Remove Programs. Now it's been 30 days and XP Pro won't let me log into the computer unless I get a new Product Key.
Will Microsoft give me a key at least to temporarily get back into the computer to backup some files before having to do a fresh install? Or if I do a manual uninstall of XP Pro, will that just revert to XP Home, or will I lose my data on the hard drive?

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