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Laptop screen won't turn on, but works with external monitor.

Tags:
  • External Monitor
  • Function Keys
  • Laptop Screen
  • Windows 8
  • Asus
  • Display
Last response: in Laptop General Discussion
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October 9, 2014 9:42:26 PM

Hello, my laptop screen won't display anything. It boots up and displays perfectly through an hdmi and my T.V.. I can't adjust my screen brightness either, nothing comes up when I use the brightness function keys, the other function keys work fine. I went to device manager and everything under Monitor and Human Interface are updated. Under Monitor the device is Generic PnP. I'm on an Asus laptop, Windows 8, 64 bit. I'd appreciate any advice.

More about : laptop screen turn works external monitor

October 9, 2014 9:55:21 PM

have you tried using the display function key, varies by manufactuer. you may have a dead monitor otherwise.
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a b * Windows 8
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October 9, 2014 9:56:09 PM

normaly means dead back light. try turning it on and shining a bright light into the screen if theres an image there the backligt is gone.

if not then its likely the connector between the screen and the motherboard. they tend to break at the bazel.
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October 12, 2014 10:14:42 AM

diabedo said:
have you tried using the display function key, varies by manufactuer. you may have a dead monitor otherwise.


Yea I did, it's f7 for me and I also did Windows key P, tried dual monitor, single monitor and it always just shows up on my T.V. even when I do PC screen only. Thanks for getting back to me, I may have to just take it into a shop.
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October 12, 2014 10:17:36 AM

HEXiT said:
normaly means dead back light. try turning it on and shining a bright light into the screen if theres an image there the backligt is gone.

if not then its likely the connector between the screen and the motherboard. they tend to break at the bazel.


I shone a light and nothing appeared. I just didn't think it would be a hardware issue since the laptops not even letting me use the brightness function, it's almost like the laptop doesn't recognize that there's a screen. Well I might just take it into a shop since it has no warranty. Thanks for getting back to me.
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a b * Windows 8
a b Ĉ ASUS
October 16, 2014 5:07:25 AM

taking it back is the best option as it sounds like the connection between the screen and the motherboard has broken, cutting the power to the whole of the screen.

reason i said shine a light into the screen (i meant press it up against the screen and look for an image from the reflected light).
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