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Thread: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism




  1. #1
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    Default EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    Hi.

    I have a few technical question about the BIOS of EP45-DQ6.
    I got a board EP45-DQ6 with F2 initial bios about a month ago. At the very first boot, it was OK. Then at the second boot, I used the tool in the BIOS to flash the new bios 13d. The board bricked in the sense that it keeps rebooting itself and shuts down without any posting. Apparently the dual bios function doesn't come into play at all. Could you tell me why? What is the safe way to flash the bios? With dos (flshspi.exe) ?
    I tried clearing cmos, taking out the battery. Or attach a dvd-rom with the disc came with the board inside.
    I RMAed the board and havn't got it back yet. Really want to know why this happened.

    Another scenario, I was trying to put the new Intel boot rom, both the AHCI and raid rom into the stock bios F2. And I experimented these roms with ASUS P5Q PRO before. I used CBROM32. Then after flashing, another EP45-DQ6 is bricked with exactly the same thing as described above. I kept thinking how to trigger the dual bios restoration or just a boot block to recover the bios is fine.

    After bricking two boards, I wonder how dual bios works, why flashing an official bios with qflash would brick the board, also why only modding the PCI rom part in a working bios would brick the board.

    As Gigabyte advertised, the back up bios would take action whenever the first one is not working. Then how does it work. In both scenes, there are no action taken by the back up bioses. And the bootblock (the way we usually do to resore the bios) didn't pop up either, even with a PCI video card.

    Then on the second board, I went further. I cut the power pin of the M bios. If the back up bios actually storage something and it would take action, then the missing of the M bios would trigger the back up bios, right? However, nothing happened. The second board remained what it is, keeps rebooting and no post. Then I desoldered the M bios. Still, no back up bios action. The board remained bricked.

    I got totally confused. So the next step would be desolder the back up bios and solder it on the M bios place. However, still no go.

    So why didn't a boot block show up in either case? And how to trigger dual bios?

    I googled it many times. It loos like many people have the same issue as mine. Some of them tried SLIC. Some of them just flashed the official bios.
    So there is some defect on the dual bios design or just the flashing procedure.
    I still don't understand the dual bios and this gigabyte rebooting bug.

    Could you give an explanation as an engineer?
    Last edited by chenxuwen; 01-25-2010 at 09:38 AM.

  2. #2
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    One update:
    Before trying the soldering iron on the second board, I've tried shorting pin1 and pin 8 of the M_Bios when press the power button to see whether it boots as many people said and I found that on the BIOS chipset pdf. No go.
    No Back Up Bios came in.
    Last edited by chenxuwen; 01-26-2010 at 12:08 AM.

  3. #3
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    I am curious to find out the answer to the problem you are having. Maybe Lsdmeasap will be able to help.
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    Quote Originally Posted by oc nub View Post
    I am curious to find out the answer to the problem you are having. Maybe Lsdmeasap will be able to help.
    I want to know too.
    So.. bump...

    But I thought about it again.
    Maybe I didn't leave much to answer. If the engineer answers true, all these won't do trigger. Then people would be worried. Or if he answers two boards are both defected, not many people would believe that.

    I don't know. Really want to know why.

  5. #5
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    Lsdme has a post in this forum that covers jumpering the main bios chip pins to trigger copying the backup bios chip to the main bios chip. As I recall, on the ep45-ud3x mobos, it was pins 5 & 6.

    MyDigitalLife.com has a thread that covers the procedure, but I think that they claimed success jumpering different pins on the main bios chip.

    Try searching the forum and the internet using:
    bios recovery

    I'll post back later when I have more time with additional information.

    The following has helped when your mobo isn't fully bricked:
    1) Let the boot loop continue for 6 -12 times to see if it recovers.
    2) Boot with only 1 memory module in slot 1 with a minimal hardware setup.
    3) Clear the CMOS by doing the following:
    - shutdown your system
    - power off your psu and unplug the AC power cable
    - press and hold the front panel on/off switch for 10 seconds
    - remove the mobo battery
    - place a jumper block on the CLR_CMOS pins for at least 20 minutes, some have had success when the pins are jumpered for several hours; some required 12 - 24 hours before their systems successfully booted
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    Quote Originally Posted by profJim View Post
    Lsdme has a post in this forum that covers jumpering the main bios chip pins to trigger copying the backup bios chip to the main bios chip. As I recall, on the ep45-ud3x mobos, it was pins 5 & 6.

    MyDigitalLife.com has a thread that covers the procedure, but I think that they claimed success jumpering different pins on the main bios chip.

    Try searching the forum and the internet using:
    bios recovery

    I'll post back later when I have more time with additional information.

    The following has helped when your mobo isn't fully bricked:
    1) Let the boot loop continue for 6 -12 times to see if it recovers.
    2) Boot with only 1 memory module in slot 1 with a minimal hardware setup.
    3) Clear the CMOS by doing the following:
    - shutdown your system
    - power off your psu and unplug the AC power cable
    - press and hold the front panel on/off switch for 10 seconds
    - remove the mobo battery
    - place a jumper block on the CLR_CMOS pins for at least 20 minutes, some have had success when the pins are jumpered for several hours; some required 12 - 24 hours before their systems successfully booted
    Thanks for replying. I've tried 1)~3) combined. I am not kidding. I tried quite a bit of things. Try putting VDD to the chip select pin. Putting 5-6 to stop the out put of the bios for a while. But didn't pop out.

    I don't have a floopy. But if should be OK for a PCI video card to pop up. Also QD6 includes a quad bios which allows the board to read bios from a dvd-rom. I've tried this. So quad bios also fails in this case.

    What do you guys think?

  7. #7
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    BIOS flashing: A "How to fix dead dual BIOS motherboard if flashing failed" is the TT thread that discusses two different methods of jumpering the main bios chip so that the backup bios will be copied to the main bios chip. This thread has a link to a post on XtremeSystems where he unbricks a different Gigabyte mobo that has a similar dual bios chip setup. The post on XS has a link to the (very long) MyDigitalLife thread.

    Note: Lsdme considers this procedure a last resort for bricked motherboards.

    My 2 cents:

    • The dual bios feature works sometimes but not all of the time.
    • I've had no problem using Qflash to flash my saved bios profiles from a fat16 floppy or fat32 disk partition. This assumes that the bios file is not corrupted.
    • GB "virtual dual bios" is a single bios chip setup that is different.
    Q9650 @ 4.10GHz [9x456MHz]
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    Quote Originally Posted by profJim View Post
    BIOS flashing: A "How to fix dead dual BIOS motherboard if flashing failed" is the TT thread that discusses two different methods of jumpering the main bios chip so that the backup bios will be copied to the main bios chip. This thread has a link to a post on XtremeSystems where he unbricks a different Gigabyte mobo that has a similar dual bios chip setup. The post on XS has a link to the (very long) MyDigitalLife thread.

    Note: Lsdme considers this procedure a last resort for bricked motherboards.

    My 2 cents:

    • The dual bios feature works sometimes but not all of the time.
    • I've had no problem using Qflash to flash my saved bios profiles from a fat16 floppy or fat32 disk partition. This assumes that the bios file is not corrupted.
    • GB "virtual dual bios" is a single bios chip setup that is different.
    Thanks! I am not sure these will work either. I soldered the back up bios to the m bios position. But not go. I wonder whether there is anything in the back Up bios.

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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    i think the newer bios's flash both main and backup when you flash them so it might both contain the same bios
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    Default Re: EP45-DQ6 BIOS PROBLEMs and DUAL BIOS trigger mechanism

    As I recall, there is often a "timing" issue when jumpering a pair of pins on the main bios chip. Jumper the pins too soon or too late (relative to powering on the system), and nothing happens. I don't remember anyone posting what timing "trick" got their systems working, rather some had to try it many, many times before they succeeded. I've never tried hot flashing any mobo's but it's a pretty much a moot point with soldered bios chips.

    Given the less than optimal success rate for mobo automatic bios recovery, it's possible that the backup bios is corrupted.

    On trick that might work is if you install a valid copy of your mobo's bios in the root directory of a fat32 partition on a hard drive and then to try booting with the hard drive connected to the mobo. On my 3 GB systems, I've seen the following unnerving message several times:
    "Searching for a copy of the bios on your hard drives"
    So much for a "safe" copy of the bios on the backup chip.

    My EP45-UD3P (v1.0) suddenly powered off, even though it is connected to a UPS. My mobo refuses to power on, even though I've tried different cpu, psu, memory, video card, etc. Manually jumpering pins 15 & 16 (black and green) on the 24-pin mobo connector (while it is plugged into the mobo) lights up the mobo, the fan's spin, but it refuses to post/boot.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
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