I frequently rebuild my computer once Windows starts to reach its half-life, formatting the ‘ol hard drive and starting from scratch. Unfortunately, this typically involves a hunt for the Windows XP product key, which typically was written down on a piece of paper and subsequently misplaced. This time, however, I decided not to hunt for that sticky note. Surely, Windows XP knows the product key that was used when it was installed… right?
Apparently, it does, and there’s a little piece of free software that can find it for you. KeyFinder by Magical Jelly Bean Software can identify the product key for Windows 95, 98, ME, NT4, 2000, XP, Server 2003, Windows Vista, Office 97, Office XP, and Office 2003 — on the local computer or on a remote computer (provided you have appropriate security permissions). Very impressive.
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i forgot the product key number/ wrote it down wrong
Thank you very much ,it is very useful!
There’s also a software that does this at http://www.password-genius.com/how-to/how-to-recover-my-windows-xp-product-key.html. The advantage is that it can even find out your Windows system CD Key when your Windows can’t startup.Also, This software will find many other keys like office XP, office 2007 and more .
there are free software tools for doing that, you dont have to pay.
for finding Xp or Vista product key:
for xp you can use Xp key finder: http://www.xpkeyfinder.com
for vista you can use Vista Key Finder, guess: http://www.vistakeyfinder.com