Is there any more information with this error message? Searching on Google and the MS KnowledgeBase for the error code finds a number of hits for a number of different problems, so I need something to narrow it down a bit.
Can she boot into safe mode?
And with one of the problems that causes this error (and the solution), you just have to wonder WTF...?
CAUSE: The Language bar is in the upper-left area of your screen...
WORKAROUND: move the Language bar to the bottom of your screen