ok i tryed instaling windows xp sp1a on my computer (this does not only happen to service pack it happens to all the updates)the process update.exe was running at 33% cpu i was like cool every thing was going good on the instalation
then the dam thing hit 100% and it was a dead end the instaltion didnt move for 1hr hd light wasnt blinking i was like what the heck is going on so can someone help me fix this problem cuz i need at least sp1 on my computer