problem with xp

[Guest gdragone2004]

i need some help i have a friend of mine whos computer slowed down adn when

she turned it off the computer won't go back i also suggested that she start

it in safe mode she told me that when she goes to safe mode she gets a screen

telling her that she can't start up in safe mode what are some of the causes

that might not let her start up in safe mode if any one can give me some

advice i would greatly appreciate this thanks