Question about Dell Latitude C640 Notebook

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C640 power issue

Hi...thanks for your post on the power connector issue. I have myt C640 apart now and cannot get the whole plastic case off so I can get to the underside of the motherboard to see if I have a broken soldering point. Any ideas? You can email me at hal.clarke@gmail.com and I thank you very much.

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To my surprise, dell provides dis-assembly instructions online: http://support.dell.com/support/edocs/systems/latc640/sm_en/sysboard.htm#1000473

I have the same problem but didnt see a bad solder (resoldered all connectors with no success). I may have a bad AC power supply or bad charge circuit - no idea)

Posted on Jan 11, 2009

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1 Answer

C640 stopped powering up


If it will not power on from battery or AC adapter, Either the power switch is bad - OR the motherboard is shot - OR the LCD is not working. I would suggest taking it to a local PC shop and having it diagnosed, usually this costs about $30 I work for TechSupportPros of Spokane, WA and charge $30 to diagnose computers.

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1 Answer

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Crystal Driver
Applies to
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Download Dell Latitude C640 Audio Driver

I hope this resolves your problem

In case you need any other drivers for the same model or different operating system
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All the best

Jan 05, 2009 | Dell Latitude C640 Notebook

1 Answer

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Look for a Windows OEM installation code on a sticker on the bottom plastic of the laptop. Download the OEM installation CD from a Torrent site and install the OS using the code you have.

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Hi

Both Dell Part numbers 18THT and 5W299 are 8X DVD-ROM Drive Modules. DPN 18THT is compatible with Latitude C series and DPN 5W299 is compatible with Latitude D series. The two drives have different and incompatible connectors.

Your Latitude C640 is a C Series Latitude. You can therefore not use DPN 5W299.

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2 Answers

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There would be no way to know if that is the case without opening the machine. I suggest taking it to a certified
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