Method 1: Manual.
You can use either the Windows Activation Wizard graphical user interface (GUI) or a Windows Management Instrumentation (WMI) script.
For an easy and quick method of obtaining your own CD Key please read.
Click Start, and then click Run.You receive the following message: Windows is already activated.Do not use any product keys that you find on any websites, these could cause you to fail the windows genuine advantage test as those keys are probable already one Microsoft's product key blacklists.Don't edit anything except what this article tells you to when you open, 'Regedit'.In the left pane, locate and then click the following registry key: In the right pane, right-click oobetimer, and then click Modify.Use this method when you only have a few computers on which to change the product key.Legal Note: Make sure you understand that this method is indeed legal.Install SP1 for Windows.They call the SetProductKey method with the new dfx 10 plus keygen volume licensing product key.Click OK to exit.Anyways there are six more months to go for windows 7 beta 1 to expiry which is enough to enjoy windows.Change at least one digit of this value to deactivate Windows.The sample ChangeVLKey2600.vbs script and the sample ChangeVLKeySP1 script that are described in this section use the new volume licensing key that you want to enter, in its five-part alphanumeric form, as a single argument.
How to Change windows 7 Product key.