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HP Desktop PCs - Windows 7, Vista, XP Product Activation

This document pertains to HP and Compaq desktop computers that came with Windows 7, Vista, or XP operating systems.
To help prevent software piracy, Microsoft requires that Windows is activated before it can be used as full-version software. There are two methods for activating Windows: Windows Product Activation and System Locked Pre-installation.
Windows Product Activation (WPA) sends an installation ID number to Microsoft before Windows is verified and then activated. WPA involves two numbers. One is an Installation ID (generated by entering a Windows product key) that the computer owner submits to Microsoft. The second is a Confirmation ID, assigned by Microsoft, and is used to activate the operating system’s software. This method is used when upgrading or installing a new Windows edition from disc (not HP System Recovery).
System Locked Pre-installation (SLP) takes place at the factory. No intervention is required to activate the operating system software before initial use. With SLP-activated systems, most of the computer's hardware can be replaced without needing to re-activate the software through Microsoft.
Most HP computers use System Locked Pre-installation to make it easier to set up the computer. However, if you decide to install a different Windows Edition on your computer, you will need to activate the new version of Windows. There may also be situations when Windows prompts you for product activation even though the product has already been activated.
Your Windows version
To learn more about how to activate Windows, choose one of the following sections that applies to your version of Windows.
Helpful information
The following is a list of reasons why product activation might be necessary, and an explanation of terms used during the activation process.
 note:
One or more of the links above will take you outside the Hewlett-Packard Web site. HP does not control and is not responsible for information outside the HP Web site.

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Country: Ireland

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