It may be a different issue, but my grand daughter's Toshiba Satellite's screen began flickering between bright and dark display. My local "expert" shop said that damage to the display circuit board can occur if one puts too much pressure on the frame - maybe by picking up the laptop with the lid open, by the top of the frame. I will know next week, when a new screen is fitted (again - previous on damaged by a cosmetic spray). (19year old , clever but clumsy!)
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