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Updated on March 24, 2014:
Partial details of changes to Win8.1;
Modify the article structure to make it clearer and easier to understand.
1, if it is pre-installed Win8 computer want to install Win8.1 and use the built-in key activation, just refer to 'Genuine (pre-installed / retail) Win8 users to upgrade to the correct version of Win8.1 official version' can be.
2, if it is pre-installed Win8/8.1 Chinese version or ordinary version of the computer, want to upgrade to the professional version, just refer to 'pre-installed Win8/8.1 Chinese version of the computer system upgrade method guidance.'
When the computer pre-installed with Win8/8.1 is shipped from the factory, the brand machine manufacturer has written the system activation key into the computer Bios (which is the key and computer tied together) and will be used to identify the main hardware hash of the computer. Together with Key and other information submitted to the Microsoft activation server. Each computer's built-in activation key and hardware hash are unique, and there is a one-to-one relationship between key and hardware hash. When the user starts the system for advertisement the first time after purchasing the computer, the system is in an inactive state. The user needs to connect the computer to the network before the system automatically completes the activation process. Automatically activate the rough process: First, the system calculates the computer's main hardware hash and sends it back to the Microsoft server along with the key. Microsoft then compares this information with the information submitted by the previous brand machine manufacturer. If the comparison results are consistent, the activation request is accepted and the activation is completed. process. If it is inconsistent, the activation request is rejected.
Review the OEM activation principle of the Vista/Win7 era: As long as the SLIC (in the computer BIOS) + certificate (in the installation image, the same as the computer brand) + key (in the installation image, only the version of the points, all brands common ) The three can be automatically activated offline. Different from the Vista/Win7 OEM activation principle, Windows 8/8.1 OEM activation is network authentication. The authentication information is the computer's main hardware hash and activation key, both of which are related to the computer itself. If the user needs to reinstall the operating system and wants to use the built-in key activation system of the computer, he only needs to install a system that is compatible with the built-in key version of the computer to achieve automatic
. This also means that there is no so-called OEM image in the era of Windows 8/8.1, because Win8/8.1 OEM activation has only one requirement for system image: the version is the same. However, ordinary users do not understand or understand the principle of Win8/8.1 OEM activation. Therefore, when you want to re-install the system using the built-in computer key, you should also pay attention to the following points:
It is necessary to first understand the version of Win8/8.1. Win8/8.1 is divided into the following versions:
*? Single language version (CoreSingleLanguage)
*?Specific country version (CoreCountrySpecific, Win8/8.1 Chinese version belongs to this version)
* Core Edition (Core, also called Normal Edition)
*? Professional Edition Media Center (Professional WMC)
*?Enterprise Edition (Enterprise)
Usually only the first four systems pre-installed (Win8.1 update 1 will add several versions, refer to 'low or free? Win8.1 Bing version all know'), you can judge by the following two methods Pre-installed system version:
Method 1: If the tutored pre-installed system has been replaced, you can use the computer's built-in Key to determine the pre-installed system version
First, look at the built-in key as described in "Teach you how to view the pre-installed Win8/8.1 computer built-in system activation key (Win8/8.1 OEM Key)". Then determine the pre-installed system version according to 'Checking the Version and Availability of Win10/Win8.1/Win7/Office Keys'.
Method 2: If you are using a pre-installed system now, use the command to check the system version
Press Win+R to open the run, type 'slmgr.vbs /dlv' and press Enter to see the preinstalled system version information. For example, the Chinese version of Windows 8 shows the following results:
1 mirror selection
If you are using an all-in-one version image created by a netizen or downloaded a large client version image (for a pre-installed professional version), the installer automatically skips the process of detecting and entering the key when installing the system in both cases. After installation, automatic activation cannot be achieved. However, you can manually activate the key after installing the system to activate it. To manually enter the key activation, of course, you need to get the computer's built-in key. For details on how to obtain the key, see "Teach you how to check the pre-installed Win8/8.1 computer's built-in system activation key (Win8/8.1 OEM Key)". If you download the Microsoft original system (non-large-client version), the above problems do not exist, and image selection suggestions are given for various situations:
1, pre-installed is Win8/8.1 Chinese version (CoreCountrySpecific), re-installation using Win8 Chinese version of the image. See 'Win8 Chinese mirror download' 'Win8.1 Chinese version download' 'Windows 8.1? with update Chinese'.
2, pre-installed is Win8/8.1 single language version (CoreSingleLanguage), re-installation using Win8 single-language version of the image (Chinese and English can be). See 'Win8.1 single language download' 'Windows 8.1? with update single language download.'
2. The pre-installed version is Win8/8.1 (Core, also known as the Core Edition) or Win8 Professional (Professional), and the re-installation uses the 'Core Board + Professional Edition' 2-in-1 image (both English and Chinese). Downloaded in 'Win8 Download Encyclopedia' 'Win8.1 Download Encyclopedia' 'Windows 8.1? with update download Daquan.'
Tip: Pre-installed versions of older versions can be activated with built-in keys (for example, pre-installed Win8 can use the built-in key to activate Win8.1 or Win8.1 with update).
2 Installation method
If you want to activate automatically after installation, you need to ensure that the installation program can correctly obtain the built-in computer key. Routine installation methods, such as loading a virtual CD-ROM drive, booting from a
usb backup hard drive
flash drive/CD (not installing on a PE), and using the Nt6 HDD installer to boot a local hard disk, are no problem. Other installation methods cannot be guaranteed.
to add on:
If the computer hardware does not have major changes, the correct version is normally installed + use the correct key + network to automatically activate. If you have changed the hardware, you need to call Microsoft to find out the reason for the customer (say, change the hardware on the line) to reactivate.
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