Miss it or forget it key ενεργοποίησης των Windows που χρησιμοποιείτε; Παρακάτω θα δούμε πως μπορείτε να ανακτήσετε το κλειδί προϊόντος από ένα εγκατεστημένο functional Windows 10, Windows 8 or Windows 7, with one command.
It is the simplest solution to find your product key from a Windows operating system that is already installed on your computer without using any third party software. 
You should open a command prompt window and run the following command.
To open a command prompt window search for “cmd” or “cmd.exe”, and open the black icon that will appear first in the results search.
Type the following command:
wmic path softwarelicensingservice get OA3xOriginalProductKey
It will show you the product key of your operating system.
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Update:
If the above command does not work on your system, open a notepad and copy and paste the following text:
Save it to your desktop with the extension .vbs. You can use a name you want, for example, iguru.vbs.
Below you can download the file. Open .zip and double-click the file iguru.vbs. It will tell you the key of your operating system.
