Grub lost boot device?

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http://crunchbanglinux.org – Hi everyone,I got 6 days left until a project of mine is due and today my laptop running #! won't boot anymore after I've restarted it. Although this is not a #! specific problem I would really appreciate any help you can offer.Thing is, after starting the screen goes black with just an underscore flashing, not even reaching Grub boot menu. After some time, following message appears:"Reboot and select proper boot device or insert boot media in selected boot device and press a key"My first thought is to boot from a live stick and run boot repair, what do you think of that? A (HowTos)