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how to change the product key in xp home RRS feed

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  • I have recently replaced the hard drive in my sony vaio laptop, and as the operating system was on the old hard drive I have used a cd from another machine to install the operating system using the cd key, this is all going well and has been authenticated and all the updates inc sp3 have installed ok. But the product key does not match the COA on the bottom of the laptop. I have tried to use the regedit and %systemroot% etc but it still comes up with already validated. How can I change the key to the correct one for this laptop?
    Wednesday, August 5, 2009 9:21 PM

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