The whole laptopt its fine but the screen is like disconected cause dont turn on dont matter what just its off, not a poor black or grey light nop just its off
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Try connecting an external monitor (TV?) to the laptop's HDMI port and check what the display from the laptop is like when viewed on the TV. Don't forget to press the change display hotkey on the keyboard to switch the display from the laptop screen to the TV.
If there's no display seen on the TV screen then there's a motherboard problem and further testing would be required.
If the display seen on the TV is OK, switch the display output back to the laptop and then try shining a flashlight at an angle close to the laptop screen and check if you can see any images at all on the screen.
They will be very faint so trying this in a darkened room may help.
If you can see images then there's a backlight problem with the display - faulty backlight power supply, faulty LCD cable/cable connection or a faulty LCD panel.
If there are no images on the screen then there either a problem with the LCD cable/cable connection or a faulty LCD panel.
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