Question about Dell Dimension C521 PC Desktop

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Bios update can resolve lack of fan's control?

Hi, i've recently changed my dell c521 motherboard, but the new mobo has a limited bios without pc helth status, temperature readings, fan speed control, voltage reading. I've tried with "speed fan" software but it only shows hard disk and core temperature readings. Could be the problem solved with an update of the bios, a flash, and what are the real risks of doing that? Thanks.

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  • jethromex Dec 26, 2008

    I know due to "everest" software that the bios of my mobo has 2 years, and in a site of bios update, related to phoenix technologies, wich is the manufacturer of my bios, they recommend to update the bios, but i have to pay and do some other things i wish not. Also, in dell site i've found an update to c521 mobo bios, but when i run the setup of the downloaded program the monitor freezes, always. Do you suggest that i try to updat my bios again or it is in any case an unuseful option to obtain fan speed control? Thanks


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Probably not as you can only flash your BIOS from the manufacturer, so that is probably the latest version they produce since you got it recently. Under no conditions do I recommend trying to flash BIOS from someone other than the orignal manufacturer as any mistake will cause your computer to become unbootable.

Posted on Dec 26, 2008

  • Randall  Trahan
    Randall Trahan Dec 26, 2008

    I gotta be honest with ya, what you had before was ATAPI BIOS capability which let's you do all kind of cool stuff like overclock your CPU. But from what I gather now you do not have those capabilites. It's just a big jump from a regular BIOS to ATAPI and the company normally automatically gives you that capability with the motherboard. But on the positive side if you can get anything from dell to work you should be ok. Dell has an on-line chat under support for free, you may pose the question to them also.


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