This is a video tutorial I made on how to replace the display panel in a Toshiba Satellite S855-D laptop. It's a bit lengthy but I go into good detail and show the proper way to replace the screen without damaging anything, which is easy to do on this model laptop if you aren't careful. The latter half is putting the new panel in so if you'd rather not watch the whole thing, just do the disassembly instructions in reverse and you should largely be fine.
I ordered this panel from LaptopScreen.com and it was a direct replacement of the original panel that came from the Toshiba factory. This laptop ships with a glossy panel but LaptopScreen.com has a matte model available for the same price.
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