HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion In the right pane, look for an entry named ProductId or DigitalProductId . However, Windows does not store the plain-text product key here (it’s encrypted). This method is actually used to clear a key so you can re-enter a new one.
Click the Start button (Windows logo) at the bottom left of your screen.
Right-click on cmd.exe in the search results and select Run as administrator . Click Yes on the User Account Control prompt. how to change windows 7 product key
Click OK . Then, to activate the key, type the following command and press Enter:
slmgr.vbs /ipk 12345-67890-ABCDE-FGHIJ-KLMNO Press Enter . A pop-up window will appear (the Windows Script Host). It will say: "Installed product key successfully." Click the Start button (Windows logo) at the
Right-click on Computer and select Properties from the context menu. Alternatively, you can press Windows + Pause/Break on your keyboard as a shortcut.
In the black command window, type the following command, but replace the X’s with your actual product key (including the hyphens): Click OK
Scroll down to the bottom of the System window that appears. Look for the section labeled Windows activation .