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cannot activate windows xp logs off

1. Log onto the PC using safemode with command prompt.
2. At command prompt type explorer.exe press ENTER
3. Go to D: drive or your CD Drive
4. Copy the TOOLS folder from windows CD to c:\
5. Right click on and select EXTRACT TO Tools folder. Creates a new folder called deploy
6. Open the folder
7. Double click on Sysprep
7. Select "Factory Seal"
8. PC will shut down once this is completed
9. Start normal mode

can also try
rundll32.exe syssetup,SetupOobeBnk

First Modify
HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents\OOBETimer
Then run "%systemroot%\system32\oobe\msoobe.exe /a"