Try this
http://www.magicaljellybean.com/kfbeta.shtml

This program will report the key in your registry

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@dunedin wrote:

 

Try this
http://www.magicaljellybean.com/kfbeta.shtml

This program will report the key in your registry

Since it's a new hard disk, and a new installation, that program will not do anything for this user.

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@JJMARCH wrote:

i had to replace my old hard drive with a new hard drive due to too many bad sectors in my old hard drive. after i installed windows xp on the new hard drive... the product key on the certificate on authenticity (coa) is considered as invalid when i tried to activate windows xp. i need ur help.. thanks.

The product key is on the side of your desktop on a sticker.