I've been tasked with fixing a sibling's computer which contracted Rootkit, and so far it has been an annoying ordeal. When it logs on, it flashes the desktop, then logs off automatically, and leads me to the user selection screen. I was able to determine the problem was Rootkit before, but during my absence a past weekend, my father tried to fix it and did something which he can't remember and I've been left unable to access safe mode. Thanks in advance for the help. Running Windows XP on her computer, btw.