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Laptop screen blinks and fades away

my laptop screen blinks a scratch images and fades away and do not show properly

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@tameru could be the backlight, could be your LCD screen or it could be the motherboard, GPU and other video circuitry component. It'll help if you can clarify what your screen shows. Things like this "a scratch image" get confusing. Let us know what kind of image this is. The other thing is when you say it fades away. Explaining how it does it fade, becomes important.

A simple check for that would be to darken the room and turn the computer on. Then use a flashlight and angle the light at the screen on different areas. You might make out some shadows or see a slight grey color. If so, it's your backlight. That can be your backlight array or the backlight circuitry on your motherboard. Next, connect an external monitor to your laptop. If that displays your desktop properly, you know that you have an issue with other your LCD screen or with the video circuitry on your motherboard. Let us know what you find out.

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