If you have Windows 8 installed and activated
NirSoft’s ProduKey is your friend. It’s a free portable tool that reveals the keys not only for your installed Windows operating system but also other installed software as well, such as MS Office.
But if not
For example, how can I retrieve the key from a downgraded machine that runs Windows 7?
That’s where RWEverything (Read, Write Everything) comes to the rescue. Let me quickly show you how:
First of all, download the proper version from its Download page. There is also a portable version available that lets you run and forget it.
Extract the program from the zipped file, and double-click the RW.exe executable file to launch the program.
Then, click ACPI icon from the top toolbar, and MSDM table in ACPI table. And you will find your BIOS embedded key right in the Data row.
I’ve tested it on several Windows 8 pre-installed machine and have confirmed that the information retrieved within the tool is accurate.
Note: that the method described above may not work on computers manufactured by Dell.
Change the Product Key in Windows 8
To change the product key without first activating Windows, use one of the following methods:
- Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
- In the search box, type Slui 3.
- Tap or click the Slui 3 icon.
- Type your product key in the Windows Activation window, and then click Activate.