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Thread: EP2C612D8-2T8R: CPU fan off for 50 sec after power rurned on




  1. #1
    Join Date
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    Exclamation EP2C612D8-2T8R: CPU fan off for 50 sec after power turned on

    While I was building a EP2C612D8-2T8R (ATX, dual Xeon 2011v3, 10g ethernet, SAS-3) based system last night I noticed that the CPU fan was not enabled until 50 seconds after the power button was pressed (video comes on about 2 seconds after the power button is pressed, so the system sits with the display active about 48 seconds before turning on the fan). *All* motherboard fan connectors are off during his interval so I wired the CPU fan directly to the power supply. It looks like a bad BIOS bug tome. Anyone know of any other explanation?
    Last edited by jrv; 06-18-2015 at 09:50 AM.

  2. #2
    Britgeezer is offline Member
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    Default Re: EP2C612D8-2T8R: CPU fan off for 50 sec after power turned on

    Doesn't seem right. I would suggest a full CMOS reset.
    • Bridge the CMOS jumper.
    • Remove battery (several hours is best)
    • Reinstall
    • Remove jumper
    • Run default settings
    • Up date from there.

    This assumes you have latest BIOS

    It fixes many problems.

  3. #3
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    Default Re: EP2C612D8-2T8R: CPU fan off for 50 sec after power rurned on

    There is only one BIOS available for this board (the initial release). I see no CMOS jumper and none is mentioned in the manual.

  4. #4
    Britgeezer is offline Member
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    Default Re: EP2C612D8-2T8R: CPU fan off for 50 sec after power rurned on

    Looks to me that depending on the sub version of the MB there were 2 BIOS versions with the same date. No idea why.

    I couldn't see a clear CMOS jumper either but removing the battery for several hours will have that effect.

    What I'm trying to do is to force the complete system to rerun initial setup.

    I did see some features for timing of item in boot up - but I have no experience with this particular MB so will not suggest anything more.

    It does look like it would be fun to play with, its been years since I messed with dual CPU systems, not much need with my home server.

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