Question about Dell Latitude D800 Notebook

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Dell D800 won't boot

I read a thread where you commented on trying an led test to see what happens. Mine is a Latitude D800 and it won't boot. The lights come on, it makes a knocking sound like 3 times (sounds like the HD) then a loud beep and nothing. The screen stays black. The led test was 1 beep pause 4 beeps pause 1 more beep. I pulled the fan out and it was caked with dust. Pulled the battery out like you suggested to someone else and no dif. Any suggestions? Thanks

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  • Dannydmode May 01, 2008

    Tried holding the Fn key and power button and it still knocks. It is coming from the lower left side of the laptop where your hand rests when typing. I tried hooking up the external monitor and pressing the F8 + Fn and nothing. I don't think the laptop is going through the power up cycle. It sounds like the hard drive is spinning and knocking and then it just beeps twice and nothing. It tries to start up for about 5 seconds and all of the lights next to the power button stay lit and the lights on the bottom right side of the screen stay lit, but you cannot hear anything internaly running except the fan and there is no display. Could it be the motherboard or CPU?

  • Anonymous Mar 12, 2014

    computer will not boot only a loud beep

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You have an issue of no display and as you see that u are betting the knocking sounds, could u plzz let me know are you getting these sounds when you power on the computer with the Fn and the power button, if you are able to listen to the sound but there is nodispaly then its a no video issue . in order to determine whether its an issue with the LCd you can connect an external monitor to the laptop and power on the laptop then hold the Fn key down and then press the F8 key and release both the but keys, look for the display on the m#external monitor , toggle the keys a couple of times , if you are able to see the display on the external monitor and not on the LCD , then u have to open the cover above the keyboard (hinge cover) and reseat the LCD cable, if there is still no display then the LCD has to be replaced.

Let me know once you try these steps...

all the best :)

Posted on May 01, 2008

  • SYED KHAN May 03, 2008

    it needs advance troubleshooting , i would suggest you to take the laptop to a service center , if it is covered under warranty then dell has got a depot service .

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