Question about Dell Inspiron 6400 Notebook

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My laptop monitor goes dark

I have a Dell Inspiron 6400 laptop with Windows 7. Lately, I'll be working and the screen just goes dark, as if the system went into hybernation. My external monitor continues to work however. If I let it sit for a while, both monitors go dark and then if I move the mouse, I get both monitors back again, but not for long. HELP

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  • 356 Answers

Hi there! Try this trick...

You can adjust the screen brightness within BIOS set up...

It works with Dell!!!

^_^

Posted on Jun 03, 2010

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1 Answer

Dell Inspiron 6400 doesn't boot past dell splash


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http://support.dell.com/support/topics/global.aspx/support/dsn/document?c=us&cs=04&l=en&s=bsd&dn=1092705

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Check if you are sending the signal to the external monitor. On my laptop with Windows 7, I can right click on an open section of the desktop and choose Graphics Properties. In this window, I can choose to send the display to the laptop's internal monitor, the external monitor or both.
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When I have added a second monitor to a desktop, I needed to reboot and allow new hardware to be found before the related Screen Resolution (right click on the desktop again) let me find the second monitor and choose if this was a duplicate or extended screen.

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Mar 08, 2010 | Dell Inspiron 6400 Notebook

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Monitor does not work, computer starts up, dell prompts load, windows prompts load then screen goes black. i can hear everything loading but no display.


connect an external monitor on your machine and check if display is ok on the external monitor. if yes, try to re-install your video driver and check if display is ok on your laptop.

if both doesnt have display (external monitor and laptop's display) i suspected your lcd display is faulty.

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1 Answer

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If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.

The buzzing sound is most likely the inverter problem.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
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That sounds like you have something loose ..

Here is an on-line service manual for that

I would look specifically @ the LCD/monitor lead and its connections

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Laptop goes dark


You can refer to this document for display assembly. It looks like the display is going bad. By checking the seating of the display cable, you're isolating the fact that the cable is connected.

http://support.dell.com/support/edocs/systems/ins6400/en/sm/display.htm#wp1022270


Hope this helps :) Kindly leave a rating. Thanks..

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