Question about Dell Latitude D420 Motherboard - XJ577

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I am using a dell latitude D420, the computer doesnt come on when i press the power button. the power light blinks when i switch power on but the pc wont switch on. removed the battery and tried direct power, still it is not coming on. Is it a motherboard problem or something else? Munas

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Several things could cause this problem your power cord may not be supplying enough voltage or amperage or both. the ram could have been compromised or the hard drive may not be initializing. i would look at the motherboard last. illiminate the easy stuff first. check voltage level on your ac power supply. try different ram open the hard drive bay and make sure it is comming up to speed.
certain thing happen in a given order during the boot process. the bios loads so the start up starts it loads to the ram and bring the hard drive up then video. your unit is stopping in the very beginning of these steps. follow these steps to isolate the cause.

Posted on Nov 06, 2010

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.I included a couple of links to some parts for the D420
**************************************************************************************************************
There is one test to determine if it is the screen causing the problem or maybe the lcd converter.
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Please take time to rate me

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Nov 01, 2010 | Dell Latitude D420 Notebook

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I have a Dell D420 Laptop , which doesn't Boot , as soon as I press the Power on Button, the Caps Lock LED keeps blinking & nearly Blinking 25 times, all LEDs goes off.


Usually the leds should flash a code. These will be short and long flashes a pause then a repeat.
You should try and write this down if you can.

Usually when all you get is fast flashes like that it will be the motherboard or the cpu. Without knowing the exact flash I can't tell you what its telling you. You should be under warranty for that ( I think) so it might be worth contacting HP support You can call them toll free or chat online. They will be able to guide you as to what the lights mean. Then you need to figure out if its worth fixing.

I wish I could help you more than that but other than knowing that fast flashing is typically the computer panicking with a problem I can't tell you any more without knowing the exact sequence.

Oct 26, 2010 | Dell Latitude D420 Motherboard - XJ577

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