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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Re: Dell D800 won't boot
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.
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Yes you have speakers. Either your audio circuit is defective or your software drivers are corrupted. Try holding down the key next to the key while powering on the laptop. This should invoke a diagnostic program which will test you audio circuit. You can also boot from your Resource CD and initiate diagnostics to test the audio. If you hear audio from the laptop using these diags then you have a problem with the drivers or software, not hardware.
Because you lost two devices, the DVD and the wireless mini card, I believe your problem is a drivers issue. You should make sure you do not have any Malware that is removing these drivers. If you have access to the Internet download and install Malwarebytes. It has a quick scan that will ID any infections. Then get the newest drivers for those two devices from Dell's support site. Before you install the drivers, remove those devices in Control Panel.
ok now it sounds to me the power pack on the back has shat its self so ufourtanetly u need a new one if u still have a valid warrenty ring dell or go to their web site at www.dell.com and they will happiley help u there number is also their but if u dont have warrenty go to their website and see how much it costs for a new battery but see a friend who has a dell laptop and plug in the power cord it might be your power cord not your com or battery so give it a wirl and if u have any problems email me at firstname.lastname@example.org