This one is very easy, just we need to play around with the registry editor.
1. Click on Run and type regedit, click enter
2. Look for “HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion”
3. Click on “WPAEvents” and search for OOBETimer, right click on it, and modify the value to ”FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD”, without the quotation marks, click on Ok.
4. Now select the wpaevents folder, and deny all the permissions.
Enjoy your genuine Windows XP again. Btw, I don’t support piracy, is just for people that like me, got an old laptop and the serial got scratched.