Windows 7 was launched on October 22nd, and is now available at all retail stores near you.

In case you need to change your Windows 7 product key, there are two methods to do so. You can do it from System Properties or from DOS using the commands.

How to Change Windows 7 Product Key

To change Windows 7 product key, follow the simple steps below:

1. Right-click on the Computer desktop shortcut and go to Properties.

2. At the bottom of the window, click on Change Product key.

3. Enter your product key in the format XXXXX-XXXXX-XXXXX-XXXXX-XXXXX and press Enter.

4. Your new product key will now be activated.

5. That’s it! Your Windows 7 product key is now changed.

How to Change Windows 7 Product Key from DOS

1. Click on Start (the Orb) and type ‘cmd’ in the search box.

2. This will open Command Prompt, or you can add Command Prompt in your right-click menu.

3. Now type the following in Command Prompt and press Enter.
slmgr.vbs -ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
Note: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX should be your product key.

4. Once done, type slmgr.vbs -ato to activate your Windows 7.