To view the Windows product key preinstalled on your computer, first use the command prompt: run as an administrator and enter wmic path softwarelicensingservice get OA3xOriginalProductKey; secondly, it can be extracted through PowerShell input (Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey; in addition, you can use third-party tools such as ProduKey to read directly, but you need to download it from the official to ensure security. It should be noted that some branded machines may not have a complete key embedded, and the command will return blank or you need to contact the manufacturer to obtain it.
If your computer is a branded computer or pre-installed with genuine Windows systems, the Product Key is usually written to the BIOS or UEFI firmware. You don't need to look for stickers or flip through instructions everywhere, you can "dig" them out in the system.

Use the command prompt to view the product key
This is the easiest and most direct way. As long as the Windows you are currently using is active, you can obtain the key through the command prompt for administrator permissions:

- Press
Win X
and select "Terminal (Admin)" or "Command Prompt (Admin)" - Enter the following command and press Enter:
wmic path softwarelicensingservice get OA3xOriginalProductKey
- Your product key will be output (if it exists)
?? Note: Some OEM manufacturers (such as Dell, HP, Lenovo) may not store the full key in BIOS/UEFI, and this command may return blank. Not all systems support this method of extraction.
Extract keys with PowerShell scripts
If you are familiar with scripting operations, you can also use PowerShell to extract the key:

- Right-click the Start menu and select "Windows Terminal (Administrator)"
- Enter the following command:
(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey
The result will show the original product key embedded in your motherboard BIOS/UEFI.
Tips: If you want to save the key, you can add a sentence after the command
| Out-File C:\key.txt
, which will be output to the key.txt file in the root directory of the C disk.
Third-party tools can help you do it
If you don't want to type a command, you can use some small third-party tools to read the product key. For example:
- ProduKey (Produced by NirSoft)
- Windows Product Key Viewer
After running these tools, they automatically scan the product key information in the system, including the parts extracted from BIOS/UEFI. They usually do not need to be installed, they can be run directly after downloading.
Recommended to use: Make sure to download from the official website and avoid bundling. Although this type of tool is convenient, it is not suitable for use in an enterprise environment and may have security policy restrictions.
Basically these are the methods. You can choose the most suitable method according to your technical level and system environment. It should be noted that not every computer will retain the product key in the firmware, and some will only retain the certificate logo. At this time, you need to contact the manufacturer or find the purchase record.
The above is the detailed content of How to find the Windows product key in BIOS/UEFI?. For more information, please follow other related articles on the PHP Chinese website!

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