Question about Dell Latitude C640 Notebook

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There are no active mixer devices

I have this dell latitude c640 and i can't play sound, if i try to access to volume it reads there are no active mixer devices. pls can you help solve this problem

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  • sanatamim Dec 19, 2008

    I Have the same problem for over 4 months, I tried so many things to solve it, but no luck.
    I have a Lenovo 3000 N200 laptop , I tried reinstalling windows , but still I have the problem.
    windows Audio is started from services, but Audio setting is greyed out.
    I tried services.msc , Is there anyone who knows the solution to this ?

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  • 166 Answers

Sounds like you might just need the drivers restored for your sound card.

Try downloading the driver for the sound card by clickingon this link

http://support.dell.com/support/topics/global.aspx/support/downloads/en/downloads_splash?c=us&l=en&s=gen&~mode=popup&file=57707

If that doesnt fix it you migh have the device disabled in the bios.
Try the drivers first then let me know if it works and we will go from there

Posted on Aug 21, 2008

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Hi! pls. help me if there any Ram other than ddr 266 that compatible to my dell latitude c640 pls. i want to upgrade it into higshest


Go here and see your options:

http://www.crucial.com/store/listparts.aspx?model=Latitude%20C640%20Series&Cat=RAM

This site is your best choice for support, price and quality.

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My dell latitude c640 doesn't produce sound the sound ports for internal speakers are not active, then the pci modem drivers, Ethernet controller drivers, and video controller drivers are not available.


Hello and Welcome to FixYa!
Seems all the drivers are missing, you can download all the required drivers from the Vendor's site here. Select the drivers according to your Operating System.
Any more questions, do ask me. Thanks for using our service. Concerned, Waqar.

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I am new too pcs my dell model c640 laptop will it play cds or dvds


Do the following:
1- Right Click my computer.
2- Select Manage.
3- Select Device Manager.
4- Select from the right pane , DVD/CD-ROM Drive.
5- See what comes under it , and read the letters.

CD-R = Only read CD
CD-RW = Read & Write CD
DVD-R = Read DVD & CD (mostly write CD also)
DVD-RW = Read and Write everything Except DVD-Dl

I hope this helps

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One of my Dell Latitude C640 laptops cannot find or connect to the wireless network. My other one will. They do have two different wireless cards, but I've compared all settings & they seem to be the...


card is hardwere. you should instell softtwere.softwere make any device active. you can get wireless softwere,in your board cd. install it .it can work

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