If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the screen (with the display switched back to the laptop screen, away from the external monitor) and check if you can see images on the screen.
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If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the laptop screen (with the display switched back to the laptop screen, away from the external monitor) and check if you can see images on the screen.
They will be ''very faint'' so do this in a darkened room as it may help to see them if they are there.
If you can see images then there's a backlight problem in the laptop.
Knowing the model number will help to find out whether it is a motherboard problem, a LVDS cable problem or a problem in the screen itself.
''When working inside a laptop, always disconnect the battery from the motherboard as soon as possible'' before doing anything else. There is always power on the motherboard somewhere. The Power button is not a power isolating button. Think of the laptop as being in an extremely low power state when it is off and not that it is totally disconnected from any power at all.
If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the screen (with the display switched back to the laptop screen, away from the external monitor) and check if you can see images on the screen.
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They will be very faint so do this in a darkened room as it may help to see them if they are there.
+
They will be ''very faint'' so do this in a darkened room as it may help to see them if they are there.
If you can see images then there's a backlight problem in the laptop.
Knowing the model number will help to find out whether it is a motherboard problem, a LVDS cable problem or a problem in the screen itself.
''When working inside a laptop, always disconnect the battery from the motherboard as soon as possible'' before doing anything else. There is always power on the motherboard somewhere. The Power button is not a power isolating button. Think of the laptop as being in an extremely low power state when it is off and not that it is totally disconnected from any power at all.
If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the screen (with the display switched back to the laptop screen, away form the external monitor) and check if you can see images on the screen.
+
If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the screen (with the display switched back to the laptop screen, away from the external monitor) and check if you can see images on the screen.
They will be very faint so do this in a darkened room as it may help to see them if they are there.
If you can see images then there's a backlight problem in the laptop.
Knowing the model number will help to find out whether it is a motherboard problem, a LVDS cable problem or a problem in the screen itself.
''When working inside a laptop, always disconnect the battery from the motherboard as soon as possible'' before doing anything else. There is always power on the motherboard somewhere. The Power button is not a power isolating button. Think of the laptop as being in an extremely low power state when it is off and not that it is totally disconnected from any power at all.
Hi @petrasanta61182
Please confirm the model number of your laptop?
If there is a display when using an external monitor connected to the laptop, try shining a flashlight at an angle close to the screen (with the display switched back to the laptop screen, away form the external monitor) and check if you can see images on the screen.
They will be very faint so do this in a darkened room as it may help to see them if they are there.
If you can see images then there's a backlight problem in the laptop.
Knowing the model number will help to find out whether it is a motherboard problem, a LVDS cable problem or a problem in the screen itself.
''When working inside a laptop, always disconnect the battery from the motherboard as soon as possible'' before doing anything else. There is always power on the motherboard somewhere. The Power button is not a power isolating button. Think of the laptop as being in an extremely low power state when it is off and not that it is totally disconnected from any power at all.