Not to worry! You will not lose all your important documents even if we cannot help you with your screen, as we can still recover files on your Hard Drive. First of all, you will probably need a new screen because it appears that the backlight is working fine. I cannot source the part on iFixit, so if anyone can find this screen assembly elsewhere it would be much appreciated.
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=== Update (09/14/2018) ===
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I found the part on eBay, but I cannot find a guide or video on how to replace it. I cannot guarantee that the part will work because it is from eBay, not iFixit.
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[https://www.ebay.com/i/282613149424?chn=ps|Part on eBay]
Not to worry! You will not lose all your important documents even if we cannot help you with your screen, as we can still recover files on your Hard Drive. First of all, you will probably need a new screen because it appears that the backlight is working fine. I cannot source the part on iFixit, so if anyone can find this screen assembly elsewhere it would be much appreciated.