I'm like you actually, but that's mostly 'cause I'm a one-shot kind of gal. I get an idea in my mind (a very abstract one, mind you) and start building something from there, making it up as I go along. If I'm having problems with one part, I skip it and write the next scene, and when I'm done I only spell chek and look all of my not-so-sure words (the bane of not being a native english speaker) and think of a title.

But yeah, I don't ever do outlines; but the first line and the last one are always the most difficult. That and dialogue. Dialogue is evil!! XD

Ps. Sorry about your computer, mine used to give up on me all the time too.