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Asus ROG 15'' ryzen-powered laptop released early 2021.

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Why did my display turned black after being turned on

After turning on my computer the screen worked fine, when started digging up the web and playing some games as I usually do. Then pc screen started showing me the color bars you would see on old tv's on the laptop screen and then it turned black, after disassembling the computer and cleaning it up, plugging and un-plugging the screen did not make any effect, just that this time the screen would have black backlight. however after some time the screen stopped turning on completely and only worked through the monitor.

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Hi @luiseddilc80475

With the laptop on, try shining a flashlight at an angle close to the laptop's screen and check if you can see any images at all.

They will be very faint if they are there so trying this in a darkened room may help to see them.

If you can see images then there's a backlight problem with the display. This could be a faulty backlight power supply on the motherboard, faulty video cable or a faulty screen.

Hopefully you turned off the laptop and disconnected the battery from the motherboard before unplugging and plugging in the screen.

Plugging the video cable back in again if the laptop was on or even if it were off and the battery wasn't disconnected, could've damaged the backlight power circuit i.e. blown a fuse on the motherboard if there is one or perhaps even a power mosfet that supplies the backlight power if there isn't a fuse.

If you can't see any images, then it could be a faulty video cable or laptop screen

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Luis Eddil Calderón Rivas estará eternamente agradecido.
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