If you only have Windows XP SP1 if you have no Windows XP service pack installed at all you must first install Windows XP SP1a before installing Windows XP SP3.
Ihe dị mkpa: Ọ bụrụ naanị na ị nwere Windows XP SP1, maọbụ ọ bụrụ na enweghị ọrụ Windows XP arụnyere na ya, ị ga-ebu ụzọ wụnye Windows XP SP1a tupu ịwụnye Windows XP SP3.