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The Dell Latitude E6400 was Dell's mainstream corporate 14.1" notebook introduced in August 2008.

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powers on for a second then shuts down

i have a small dell latitude e6400. when i power it on it stays on for a few seconds it shows 3 led locks lit up on the keybord then shuts down.

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Hi @sugerbea ,

Can you hear the fan (or feel the air at the vent) running at all?

Are the LEDs flashing or are on steady, and if flashing and steady which LEDs are flashing and which are on steady? (If you have enough time to observe them that is)

Have you tried starting it with the charger connected and switched on?

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yes i can hear the fan kick on but it shuts down right away the led lights are 3 little locks above the f4 and f5 keyus they light up and blink till the laptop shuts down.

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i tryed it when pluged in and with batorry out and pluged in still dose the same thing.

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Hi @sugerbea ,

I realize that it may be difficult but can you tell exactly which ones blink and which ones are steady, looking from left to right.

Getting that information will help diagnose the problem as the sequence of which is flashing and which is on steady gives an error code which will help to point out the problem area.

Here is a link to the service manual for your laptop. Click on the Troubleshooting link to view what the Diagnostic Light Codes during POST pattern reveals regarding the problem

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Puan 2

3 Yorum:

it is the first one on the left is the only one that blinks

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Hi @sugerbea ,

According to the service manual if the first light is blinking and the next 2 are solid then it suggests that you re-seat the Processor module.

This indicates that it may have come loose or that it is faulty. Given that it is screwed down it is hard to imagine why it would be loose although i suppose it could happen.

In any event you need to do what the manual says to prove the fault one way or the other.

From the Contents section at the beginning of the service manual select "Processor Module" and then follow "all" the necessary pre requisite steps and then the procedure to remove and reinstall the processor (CPU) and then see if the problem has been resolved. If not you may have a faulty CPU.

If this seems too daunting a task contact a reputable, professional laptop repair service and ask for a quote to repair the laptop.

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ok thanks so much you have been a grate help.

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