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Dell E5440 turns on but the screen is black

Laptop repairing Discussion, How To Repair Laptop Motherboard
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Joined: Tue Jan 22, 2019 6:34 pm

hello, I have this Dell that turns on but the screen remains black, the card is a VAW30 LA-9832P Rev: 1.0, I tried to warm the cpu-gpu but it doesn't change anything, could it be one of the two bios or some missing voltage? where do I find the power sequence?

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