Oh no! I'm very happy to hear that you've haven't lost anything so consider yourself very lucky and make back up plans okay? It can be as easy as e-mailing your daily writing to yourself or posting them in your journal here at Dreamwidth (I do both and back up on a thumb drive, paranoid writer that I am).

Hmmm as to procrastination... how much of a gambler are you? As you have first hand experience, problems can rear their ugly head at any time. It's nice to have a nice fat word count to fall back on but I've known a Nano writer or two that liked to run lean and mean...

Good luck with the laptop repairs this weekend!