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The Lenovo G50-80 is an entry level personal laptop released by Lenovo in 2009. The laptop has a 15.6 in screen and uses an Intel GPU processor.

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My display is gone black. It works when connected to external monitor.

My laptop displays a black screen when switched on. However, there is a display when connected to an external monitor. Is it a display problem entirely? How much is the charge to replace display? There is no external damage to the display screen though.

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Hi @mohua ,

With the laptop on and a display showing on the external monitor, shine a torch at an angle close to the laptop screen to check if you can "see" an image at all.

If you can you have a backlight problem.

This could br caused by a faulty backlight power supply from the motherboard, faulty backlight cable (not sure if it is a separate cable or part of the video cable), a faulty lid switch or a faulty LCD panel.

If you cannot detect any image at all (try in a darkened room, as it may be easier to see), then you may have a faulty video cable, faulty video cable connections at either end (motherboard or screen) or a faulty LCD screen.

Here's a link to the service manual for your laptop which may be of some help.

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Mohua さん、ありがとうございました!
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