Do yourself a favor and if you are computer savvy at all, remove the hard drive and buy either a SATA or ATA reader from Radio Shack... this will let you hook up your HD to another computer just like an external drive for you to pull your files off, etc.
That is unless your HD is completely shot.
I used to have a Toshiba, just perchance, have you tried pulling out the battery and letting it sit for a few seconds, then trying to power it on just off the power adapter alone?
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