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Posted on Jul 21, 2011
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Hello! After I turn Dell Inspiron 6400 power button on, there is a black screen only and Caps Lock turned on, and also Num Lock and Scroll Lock are flashing together, and that is for about 10 seconds. after that, my laptop turns off. It started, when using laptop normally to browse the web, in one moment it freezed. After that, the problem began. I tried to replace battery, and connect notebook to the adapter, even without battery, effect is the same . . .need assistance. Best regards.

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Pierre Legault

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  • Posted on Jul 21, 2011
Pierre Legault
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Could be a memory problem try removing the bottom panel, and remove both memory modules clean the contact and replace them in the slot

1 Related Answer

Anonymous

  • 3940 Answers
  • Posted on May 10, 2008

SOURCE: Dell Inspiron 6400 Black Screen Problem

Flashing - ON -Flashing indicates a problem with the LCD. Reseat the LCD cable connection to the motherboard, then see if the problem is resolved. If not, disconnect the LCD from the motherboard, and connect and external monitor, see if the system posts normally (You may need to toggle Fn +F8 for external video) if it posts, the LCD/LCD inverter is bad. If it doesn't, the motherboard is bad.

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When i turn laptop on. caplock light next to power button flashes 9 times and shuts off and leaves black screen. did a system restore turned on for a minute and started the same thing again. are 9 flashes...
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