winxp install stop on agp prob

having a prob with xp , it refuses too install over or
with win98 due too a stop on a problem between my video
card and the agp slot .

Have managed too install it after resetting bios tweaks
back too default , however , my tnt video card is now a
pci , with two other settings reading 0 .

I have all xp udates form video card and mother board
manufacturers . but has not solved my problem .

Anyone with an idea

System involved uses gigabyte super socket 7 , ga-5aa
mother board and video card is asus 16mb tnt agp vivo .