Citat:
Begin by opening the Registry Editor and navigating to
HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents
In the right pane, right-click the ODBETimer binary value and select Modify. Change at least one character of this value to either a number from 0 to 9 or to a letter from A to F, then click OK and close the Registry Editor. This renders the current product key invalid and deactivates Windows.
Now, it’s time to reactivate Windows using your new product key. Click Start | Run and enter the command:
%systemroot%\system32\oobe\msoobe /a
where %systemroot% is your Windows directory. In many cases, this command will look like:
C:\windows\system32\oobe\msoobe.exe /a
At this point, Windows will launch the Product Activation Wizard.
