I had windows xp home sp3 installed. It ran over half a year and then i installed win xp home sp1 because old windows was starting to go very buggy. New os worked very fine but when i installed sp2 computer crashed at the loading screen. I couldnt start it with safe mode eighter. I reinstalled windows back to home sp1. Couple of days later i tried to install xp pro sp2 and the same problem occured. Then the second win xp pro sp2 from my other friend and that did not work eighter. Finally i installed win xp pro sp1 and that worked. I don't know what is the problem? My computer does not like sp2's? Sorry for grammar error, please correct me.