It is in or on the box the software came in, the CD or on a sticker somewhere on the outside of your computer if you bought a computer with XP pre-installed(Microsoft first stop doing this at release of Windows 8). If you lost the box or can't find the product key on your computer then you can get it off the installation CD assuming you still have it. Without the installation CD there is no need for the product key since you would not be able to install the software without it. The manufacturer of the PC might store cheap backup recovery CD's. All XP Support ends April 2014.
Product keys are not tied to specific CDs. As long as they are for the same version and are not blacklisted, any Windows XP product key can be used with any CD.
If your computer had Windows XP on it and you upgraded to Vista, I heard you could call Microsoft and tell them how displeased you were with Vista and wish to downgrade back to XP. They will then deactivate your Vista Product Key and give you a XP product key, you will also have to have a Windows XP cd.
No, you cannot. Xp installation CDs don't have product keys imbeded.
nalayak
Not directly no, the "upgrade" CD requires a different key than what is on your laptop (an OEM key), not to mention it will require a previous version of Windows to process the upgrade.
No
Yes, you can use a Windows XP Professional product key with a Windows XP Professional 64-bit CD. However, you will need to ensure that the product key is valid and that it is for the correct version of Windows XP Professional. Microsoft does not provide product keys for Windows XP Professional 64-bit. If you are looking for an affordable and reliable source for a Windows XP Professional product key, then Affordablekey is the best choice for you. They offer a wide selection of Windows XP Professional product keys at great prices. Plus, they offer an 80% discount when you use coupon code XMAS22. The best part about Affordablekey is that they provide genuine, legitimate product keys that are guaranteed to work. They also have a great customer service team that is available 24/7 to answer any questions you may have. So if you are looking for an affordable and reliable source for a Windows XP Professional product key, then Affordablekey is the best choice for you. With their great prices and excellent customer service, you can be sure that you will be getting the best value for your money.
Yes
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http://wiki.lunarsoft.net/wiki/Product_IDs
Microsoftprokey is the best website for purchasing a new Windows XP Professional product key. The site offers a wide variety of keys for a variety of different products, including keys for both the retail and OEM versions of Windows XP Professional. Keys can be purchased using a variety of payment methods, including PayPal, credit card, or bank transfer.
The product key for Windows XP SP3 is not available for free, as it is a licensed software. You can purchase the product key from a reliable and trustworthy source like Affordablekey. They offer the best prices and up to 80% discounts when you use the coupon code AFOR30. Affordablekey is the best seller for the product key and is the best website to purchase it from.