Dell Latitude C640 owners/operator manual

Check this http://www.manualslib.com/manual/678368/Dell-Latitude-C640.html

chances are the actual power jack in the laptop has gone bad. this is a common issue with lots of laptops and every dell laptop (4) that i have owned http://www.ebay.com/itm/like/281152320878?ul_noapp=true&chn=ps&lpid=82

You can download the online Service Manual for the Dell C640 PP01L Computer from the below link:

http://support.dell.com/support/edocs/systems/latc640/sm_en/index.htm

Hope this helps.

try to press CTRL+F2. there's no wireless switch at your dell latitude c640.

Recently I discovered that my laptop latitude C640 Sound and VGA is malfunctioning. I intended downloading the drivers trial version but could not do so. pls help I'm a student and I don't have money to buy a new one

plz try by resiting the ram

Assuming you are using Windows XP
Crystal Driver
Applies to
CS2405
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
Download other Drivers

All the best

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.

If you need a DVD drive module, get DPN 18THT or an alternative Latitude C series drive.

Mike

http://support.dell.com/support/edocs/systems/latc640/sm_en/upgrades.htm#999869

this link would be helpful

get to the main board of ur system there is a jumper near the battery .
change its position while power is off and get it back to its previous position. this way u will reset cmos to default.
if the computer starts hit delete to enter setup and load system defaults.save changes then exit.
ps: defected processor could be the cause