Question about Gateway 450SX4 Notebook

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Black screen on gateway 450sx4 laptop

The screen went black when i went to move the laptop on my lap, and the ac adapter slipped out of the back of the laptop. the screen has been black ever since. the computer starts up and i can hear the fan, but the screen is just black. thanks for any help.

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  • ksheralt Oct 30, 2008

    Turned on the computer, which has no battery power, and the AC adaptor wasn't plugged in all the way. It was on for 2 seconds, and then shut off. When I turned it on with the AC adaptor in, the screen was pretty much black...I could barely make out the background. The computer store told me the backlight went out.

  • martzfamily Jan 22, 2009

    My screen is black I can make out a faint view of stuff when it is loading. I can plug it into an external monitor and I can see it fine on there.

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Inverter board. Promise.

Posted on Mar 10, 2009

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Get a new motherboard

Posted on Sep 16, 2008

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Sounds like ,audio card went died or mite be screen has shorted out try hooking it up an orther screen and see if it boots up if so either viedo screen card or screen it self

Posted on Jun 02, 2008

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It's likely that your screen is "fried" (faulty) ... try to connect your laptop to an external VGA monitor, and see if the screen shows up (on the external monitor) properly. You may have to toggle the output display (device) from computer screen to external monitor ..using Fn+F3.
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Screen is black


The cable is dislodged or you have a failing lcd.If you want to repair this yourself.Check online for a replacement cable and a Lcd too.Then you will have to open the Lcd Bazel to remove or check the cable.Make sure when you attempt this there is no power attached ,battery and Ac Adapter.
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Do you have Windows XP? I'm guessing you do because of the memory upgrade.

If you have XP, go to Control Panel - Power Options and check you battery. Choose to show in task bar.

If you have a AC Adapter, the BIOS on your laptop will NOT charge the battery, but it will show that you are on AC (unless it's completely dead)

I'm guessing that if you only had 1g of memory, you have a pretty old laptop, and you probably should purchase a new AC Adapter, and a new Battery.

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450sx4 gateway laptop troubleshooting.


Does it do this when it's running on just the battery with no AC ,or does it only do it when running on ac adapter ? If it only behaves this way when using the ac adapter,then the ac adapter is bad.
Can you hear your fan running in your laptop ? If not, your processor may be overheating(which would also cause problems like this).
However,If it behaves this way when running only on battery,then I would think you need to replace one or more of your memory chips (DIMM'S).

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