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Thread: GA-EP31-DS3L Warning! Main bios checksum error..




  1. #1
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    Default GA-EP31-DS3L Warning! Main bios checksum error..

    When i power on my Mobo, My screen keep show WARNING! MAIN BIOS CHECKSUM ERROR!
    Bios Auto Recovering......................... then reboots to the same situation. This loops forever...I can't get into the bios or qflash while this occur... Can anyone help me???

  2. #2
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    Default Re: GA-EP31-DS3L Warning! Main bios checksum error..

    The recovering can't finish, the north bridge is too cooled, try 1 memory stick and heating the chipset below the cpu, as it tries to boot with timings too low at first. Also if your cpu is 333fsb try some other 200fsb if you can or the opposite.

  3. #3
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    Default Re: GA-EP31-DS3L Warning! Main bios checksum error..

    not the north bridge is too cooled, the problem is my both bios corrupted, i use short circuit this method to force my mobo load my main bios, after i use Qflash flashed my main bios, i can in my window with that short circuit method, but next time i power on my comp, it say "Warning, Backup bios checksum error, Bios auto recovering......."

    Anyone can help me??

  4. #4
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: GA-EP31-DS3L Warning! Main bios checksum error..

    In QFlash, check to see if there is an option to:
    Copy Main Bios to Backup Bios (this is an option with my older N650SLI-DS4 motherboard)

    With 2 bios chips (Main and Backup), jumpering the MAIN Bios chip should copy the BACKUP bios to the MAIN bios chip.

    What is the revision number of your motherboard? (1.0 or 2.0 or 2.1)
    Do you have a floppy drive connected to your system?

    **edit** do you have any FAT32, FAT16 or FAT12 partitions on your hard drive?
    With a corrupted bios, it might still be able to search for a valid bios file if there is one in the root directory of a FAT partition.
    Last edited by profJim; 11-13-2010 at 05:59 PM.
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  5. #5
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP31-DS3L Warning! Main bios checksum error..

    You can also try removing all hard drives from your computer, then connect your CD/DVD drive as master on IDE, or first SATAII Port 0, and put in the motherboard driver CD.

    Then it should grab the BIOS off the CD.

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