seeeing as this is a new install so there
should not be any data you dont want to lose ??????
looks to me like you got some Operating System file corruption
I would erase/ wipe the drive with Dariks Boot n Nuke / then reinstall windows XP >>>> that will deliver a flawless clean install
here is bootable program (free) for wiping the drive
http://dban.sourceforge.net/
dont hesitate to ask more questions
