how do you fix a crack laptop blind?

Answer:

You dont, its ruined.. It would cost probably roughly 3x more to fix it then to merely replace it..
They only entity you can do is replace the screen. You would probably enjoy to send it into the entrepreneur. It might be possible to replace it yourself if you are technical, but you would hold to get the blind from the manufacturer.
Replace it. Most screen are about $200-$300