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To help prsự kiện software piracy, Microsoft requires that Windows 8 is activated before it can be used. All i-google-map.com & Compaq computers & tablets that come with Windows 8 installed activates automatically once connected khổng lồ the Internet, to make it easier for you to mix up your computer. However, if you decide to lớn install a different version of Windows 8 (such as an nâng cấp to lớn 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 to activate the hàng hóa, even though the sản phẩm has already been activated.

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If you are not using the latest version of Windows 8, some graphics và information in this document may vary. You can get the lachạy thử version from the Microsoft Store.
Windows Product Activation (WPA) sends an installation ID number to lớn Microsoft before Windows is verified, và 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 to 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 i-google-map.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 to 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 to 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 to lớn the Internet for Windows to lớn activate automatically.
End-User License Agreement (EULA): The agreement that the Windows user must accept to use the Windows sản phẩm.
Certificate of Authentiđô thị (COA): A proof of ownership identification method to help prove sầu that a Windows product is not counterfeit or copied. The COA might be in the size of a label that contains a bar code và product 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 cài đặt.
The quickest and easiest way khổng lồ activate your copy of Windows 8 is khổng lồ activate it over the Internet. If you vì not have sầu an Internet connection, or if it is inconvenient khổng lồ make a network connection, see the Other ways khổng lồ activate Windows 8 section of this document.
Press the Windows
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+ I keys lớn open the Settings charm.
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If you used discs to lớn install Windows 8, you might find the product key on the disc packaging. If you bought Windows 8 over the Internet, the hàng hóa number might be included in an email you received after the purchase và tải về of Windows 8.
If you have the Windows8 disc packaging, apply the Windows 8 Certificate of Authenticity label to lớn your computer for easy reference in the future.
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You can add features lớn Windows 8, or get a different version of Windows 8. From the Start screen, type add features lớn open the Search charm, và then select Add features khổng lồ Windows 8.1 from the tìm kiếm results. When the Add features to lớn Windows 8.1 screen opens, follow the onscreen instructions.