How to Remove Windows XP Activation

When you install the Windows XP operating system on a computer, you will need to enter your product key to activate your copy of the software. If you choose later to install the software on another computer, you must deactivate Windows on the initial computer and then activate it on the new computer after it is installed. Deactivating the operating system can be done through the Windows Registry Editor.

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Step

Log on to your PC with an administrator account.

Step

Click the Windows "Start" menu and select "Run."

Step

Type "regedit" into the text box and click on "OK" to launch the Registry Editor.

Step

Navigate to the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WPAEvents directory in the registry.

Step

Right-click on the registry entry labeled "OOBETimer" and click "Modify."

Step

Change at least one digit of the value and click "OK" to deactivate the code.