Windows XP - Change Serial Number

Environment

• Microsoft Windows XP SP3
  

Introduction
Wanna change the serial number of Windows XP as different payer different serial number

Procedures
Set the serial number to be deactivated

1. Run "regedit"
2. Go to "HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents"
3. Select "OOBETimer", and change its value at least one digit for deactivating the windows

Change the serial number to other

1. Run "%systemroot%\system32\oobe\msoobe.exe /a" for "Windows Product Activation"
2. Choose “I want to telephone a customer service representative to activate Windows”, and then "Next"
3. Click "Change Product Key"
4. Change the serial number, and then "Update"
5. Close and reboot