Question about Dell Latitude L400 CMOS Battery (7.2V, 20MAH ) - 3D278 Projector Lamp

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Dell latitude c540 laptop cmos battery. Does this pc have a cmos battery? If so does any one know where it is.

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Your model does have a CMOS Battery and the instructions for locating it are found here: http://support.dell.com/support/edocs/systems/latc640/sm_en/rsrvbatt.htm#1000202

Posted on Jan 09, 2010

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Here you may get the answer.

Posted on Jan 14, 2010

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Hi dell user:

you ask us does your pc have a comos battery,my answer is certainly,meanwhile if your interesting in some more information, please sign in this website:http://www.adapterlist.com/dell/

Posted on Sep 10, 2009

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I think you are wasting a lot of effort, I know how you feel and sometimes you cannot win.
Junk it for parts.

I do volunteer work for Technical Aid For the Disabled (a charity organisation) and repair/refurbish laptops and computers for disabled people and I hate to see good computers go to waste.

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Windows Vista is not supported on Dell Latitude C540/C640. There are no drivers for the hardware of this model. Many older computers have that problem. You can try Microsoft to see if they even exist: http://www.microsoft.com/uk/windows/products/windowsvista/buyorupgrade/upgradeadvisor.mspx
You might have to fall back to XP.




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