To help prsự kiện software piracy, Microsoft requires that Windows 8 is activated before it can be used. All & Compaq computers and tablets that come with Windows 8 installed activates automatically once connected to lớn the Internet, to lớn make it easier for you to lớn set up your computer. However, if you decide to install a different version of Windows 8 (such as an tăng cấp khổng lồ the Enterprise version) or a store-bought copy of Windows 8, you need khổng lồ activate Windows as part of the installation process. There also might be situations when Windows prompts you lớn activate the product, even though the sản phẩm has already been activated.

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If you are not using the lathử nghiệm version of Windows 8, some graphics & information in this document may vary. You can get the latest version from the Microsoft Store.
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 8 sản phẩm key) that the computer owner submits khổng lồ Microsoft, either over the Internet or by phone. The second is a confirmation ID, assigned by Microsoft, which is used to lớn activate the operating system’s software. This method is used when upgrading or installing Windows 8 from disc (not gamesbaidoithuong.comhường System Recovery).
OEM Activation 3.0 (OA3) takes place at the factory. A digital sản phẩm key (DPK) is installed on the motherboard BIOS during the manufacturing process. Windows 8 will activate automatically the first time the computer is connected khổng lồ the Internet. With OA3-activated systems, most of the computer"s hardware can be replaced without the need lớn reactivate the software through Microsoft.
If your computer came with Windows 8 pre-installed, Windows might require activation through Microsoft due to:
Replacement of the motherboard with one that does not contain the original equipment manufacturer (OEM) version of the BIOS.
Windows Product Activation (WPA): Requires a person khổng lồ unlochồng the computer before Windows can be used.
OEM Activation 3.0 (OA3): No personal intervention is required normally lớn activate Windows, but the computer must be connected khổng lồ the Internet for Windows to lớn activate automatically.
End-User License Agreement (EULA): The agreement that the Windows user must accept to lớn use the Windows product.
Certificate of Authentiđô thị (COA): A proof of ownership identification method khổng lồ help prove that a Windows sản phẩm is not counterfeit or copied. The COA might be in the size of a label that contains a bar code and sản phẩm key.

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Genuine Microsoft Label (GML): A label included on computers that came with Windows 8 pre-installed. The GML indicates which version of Windows 8 was installed originally on the computer.
Installation Identification Number: A number generated based on the product key entered during Windows setup.
The quickest and easiest way lớn activate your copy of Windows 8 is to lớn activate it over the Internet. If you bởi vì not have sầu an Internet connection, or if it is inconvenient to make a network connection, see the Other ways lớn activate Windows 8 section of this document.
Press the Windows
+ I keys to open the Settings charm.



If you used discs khổng lồ install Windows 8, you might find the hàng hóa key on the disc packaging. If you bought Windows 8 over the Internet, the product number might be included in an gmail you received after the purchase & download of Windows 8.
If you have sầu the Windows8 disc packaging, apply the Windows 8 Certificate of Authentithành phố label lớn your computer for easy reference in the future.

You can add features to Windows 8, or get a different version of Windows 8. From the Start screen, type add features to open the Search charm, and then select Add features to lớn Windows 8.1 from the tìm kiếm results. When the Add features to lớn Windows 8.1 screen opens, follow the onscreen instructions.