Do the cracked lines show up on the when you first boot it up on the BIOS screen. If so then you probably cracked you LCD. Boot it with an external monitor. Is it clear on the external monitor and cracked on the LCD?
I also opened my 17 inch laptop after about 1year of use and has this huge green splotch from top to bottom. I was told that it could have caused by opening the laptop by the corner instead of the middle. Using the corner puts alot of torque on the screen.
I would think that the larger the screen, the more likely it is to crack. I wish the literature or the salesperson had warned me of this risk.
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