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If the LCD check out as Okay, I suggest you update Chipset and Video drivers in correct (Installation) order. Please click on link below:

Responses (2)
Solutions (0)
If the LCD check out as Okay, I suggest you update Chipset and Video drivers in correct (Installation) order. Please click on link below:
LSUFAN51
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Posted June 19th, 2017 18:00
:emotion-2:
I'd suggest you follow the instructions in link below to run the LCD Built-in Self Test (BIST).
How do I Run Diagnostics on a Dell Laptop LCD? | Dell US