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Thread: GA-M750SLI-DS4 loses its mind




  1. #1
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    Exclamation GA-M750SLI-DS4 loses its mind

    Hi all,

    This is a recent problem I've been having the past two days...all hardware has been functioning as-is for the last 3 months with no changes:

    I have a Gigabyte M750a SLI board that does fine if I power down, reset, whatever...the minute I take power completely off the machine (that is, if I flip the switch on the PSU to off, or remove the cord and re-connect) then it won't POST or even go into BIOS. It just sits there with the fans going and a constant series of flashes on my DVD drive.

    The flashes appear to be 1 long followed by 3 shorts. Manual states this sequence to be a keyboard error, yet when I jumper the CMOS-clear pins and then power back up I'm able to get everything to come up (minus my settings in BIOS, which look to be returning to default).

    When I remove power, voila! it repeats.

    Is this an indication of a faulty BIOS chip, or should I be yanking everything and requesting an RMA ? I've already replaced the CR2032 lithium battery which did not remedy the problem.

    Thanks in advance.

    Specs are:

    AMD X4 940 BE @ stock speed
    8gb G.Skill F2-8500CL5D-4GBPK DDR2 1066 (don't ask, I know the probs with this...lol)
    Antec Truepower New 750 Blue (known good PSU)
    2 x BFG GTX 260 in SLI
    X-Fi Titanium soundcard
    Various fans
    Win 7 64 bit

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-M750SLI-DS4 loses its mind

    Sounds like your CMOS battery is dead, when you physically shut off the PSU this battery would be drained even if it were good, causing the CMOS to clear.

    Since yours appears to do this quicker it sounds like the battery is dead, which would clear the CMOS instantly.

    Sorry, I reply as I read and I need to quit! :)

    I see you have replace the battery already, good thinking! Have you tested with another PSU to be sure, if not I would do so before setting up a RMA

  3. #3
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    Default Re: GA-M750SLI-DS4 loses its mind

    Yes, I tested with a known-good Antec Neopower 550 Watt.

    It must be something on the motherboard itself...;(

  4. #4
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    Default Re: GA-M750SLI-DS4 loses its mind

    have you tried with another keyboard? just to eliminate it,tested outside the case to make sure theres no short inside? if its earthing somewhere maybe its draining the cmos battery?? its just a thought
    Gigabyte z77x UP4-TH F11c Modded Bios
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  5. #5
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    Default Re: GA-M750SLI-DS4 loses its mind

    Everything checks out...motherboard by itself with just power hookup and a DVD drive...still does the same thing.

    Battery checks out, not draining as far as I can tell. Voltmeter to connections at back of mobo indicates 3.029 vdc.

    I'll be needing an RMA..;(

    Too bad, as this board was purchased in December of '08 from CompuDirect, here in the states. Only a year and a half old.

    Someone from Gigabyte please contact me through these forums and let me know how to apply for RMA, or perhaps I'll just go to the website.

    * Update: I spoke with tech support in California and they agreed with me that it sounds like a faulty BIOS chip. Now to test Gigabyte's 3 year warranty...\o/

    Thanks all for the help.
    Last edited by navair2; 07-28-2010 at 08:23 AM.

  6. #6
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    Default Re: GA-M750SLI-DS4 loses its mind

    Board repaired and back to me within a month. Works fine, although they never did tell me what the fix was.

  7. #7
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: GA-M750SLI-DS4 loses its mind

    they usually don't but good to hear everything is working again.
    Main Rig
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  8. #8
    Lsdmeasap's Avatar
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    Default Re: GA-M750SLI-DS4 loses its mind

    Nice to hear your now have a working system!

    So how long exactly did it take, do you know for sure, from the time they received the board to the time you had one back?

  9. #9
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    Default Re: GA-M750SLI-DS4 loses its mind

    No, I'm not sure, but I believe it was 3 weeks.

  10. #10
    Lsdmeasap's Avatar
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    Default Re: GA-M750SLI-DS4 loses its mind

    OK, thanks!

    I just wondered, so I can keep an average tally running. Seems to be 2-3 weeks is the norm.

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