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Thread: Gigabyte GA-MA785GMT-US2H




  1. #1
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    Default Gigabyte GA-MA785GMT-US2H

    Hello,
    I have problem with this mobo.
    Everytime i restart my computer, it will not show post. after clear cmos or take out the ram, it will enter bios. but if reset the pc, it will not show bios again

    My specs:
    AMD Athlon II X2 245
    1 X Corsair RAM 2gb DDR3 1333 vs2gb1333d3
    Western Digital 640 Gb Green

    Have tried the sticky for Gigabyte mobo problem and updated the BIOS

    If i used single channel by placing in slot 1 and 3 or 2 and 4, there is no prob, able to boot and restart.
    However , If i placed in slot 1 and 2 or 3 and 4, enabling the dual channel will boot to windows and after restart, no post. in this matter, i have to reseat the ram to show post.

    it is a new built.

    Any advice?

    Thank you

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Gigabyte GA-MA785GMT-US2H

    I don't know AMD Setups very well you will need to wait for help from Artdrivers he is our AMD guy.

    Are you setting unganged or ganged when you try dual channel? Try both ways and see if both act the same, also test each slot one by one to be sure they all work

  3. #3
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    Default Re: Gigabyte GA-MA785GMT-US2H

    I have the same problem I have the
    Gigabyte GA-MA785GM-US2H (F11 latest bios 05/17/2010)
    AMD Athlon II X2 240 @ 2800 MHz
    ATI Radeon HD 4650
    4 Gb RAM (2 x 2Gd Kingston DDR2-800 PC2-6400)
    Windows 7 Home Premium 64 (6.01.7600)

    tried to install 4 x 2Gd Kingston DDR2-800 PC2-6400 to get 8 Gb
    tried to set it as dual channel (ganged) or single channel (unganged) no way to start the system with two barrette on either channel 0 or channel 1

    so I`m running 4 GB on slots 1 and 3

    when I run PC Wizard 2010 it gives me the flowing readings for the ram

    Manufacturer : Kingston
    Part Number : Unspecified
    Serial Number : ADCCC140
    Type : DDR2-SDRAM PC2-6400 (399 MHz) - [DDR2-800]
    Format : Regular UDIMM (133.35 x )
    Size : 2048 MB (2 ranks, 8 banks)
    Module Buffered : No
    Module Registered : No
    Module SLi Ready (EPP) : No
    Width : 64-bit
    Error Correction Capability (EC... No
    Max. Burst Length : 8
    Refresh : Reduced (.5x)7.8, Self Refreshµs
    Voltage : SSTL 1.8v
    Prefetch Buffer : 4-bit
    Manufacture : Week 17 of 2009
    Supported Frequencies : 333 MHz, 400 MHz
    CAS Latency (tCL) : 4 clocks @ 333 MHz, 5 clocks @ 400 MHz
    RAS to CAS (tRCD) : 5 clocks @ 333 MHz, 6 clocks @ 400 MHz
    RAS Precharge (tRP) : 5 clocks @ 333 MHz, 6 clocks @ 400 MHz
    Cycle Time (tRAS) : 15 clocks @ 333 MHz, 18 clocks @ 400 MHz
    Min TRC : 20 clocks @ 333 MHz, 24 clocks @ 400 MHz

    do you think it`s an issue of compatibility, the ram, or the MOB ?

    thanks

  4. #4
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    Default Re: Gigabyte GA-MA785GMT-US2H

    Hi ryuken:
    Everytime i restart my computer, it will not show post. after clear cmos or take out the ram, it will enter bios. but if reset the pc, it will not show bios again
    What BIOS ( F1 through F5 and motherboard GA-MA785GMT-US2H revision (rev. 1.0, rev. 1.1 rev. 3.3) do you have?
    If i used single channel by placing in slot 1 and 3 or 2 and 4, there is no prob, able to boot and restart.
    However , If i placed in slot 1 and 2 or 3 and 4, enabling the dual channel will boot to windows and after restart, no post. in this matter, i have to reseat the ram to show post.
    it is a new built.
    Any advice?
    Go into BIOS and Load optimized defaults.
    The AMD AthlonII X2 has a ↓DDR1066Mhz↓ 533 MHz Memory controller.
    AMD Athlon II X2 245 - ADX245OCK23GQ (ADX245OCGQBOX)
    We have seen some AMD AthlonII X2 cpu's have a problem with the dual channel mode. You will want to make sure it is the CPU though.

    Hi Kjrad:
    tried to set it as dual channel (ganged) or single channel (unganged)
    AMD's Ganged and unganged are both dual channel. I suggest Unganged for multi cores. This enables the CPU to pull info from both sticks simultaneously. Ganged is basically for single core applications. You may want to go into BIOS and Load Optimized Defaults. Auto settings will adjust Memory voltage (1.8v) and timmings. This happens when you load optimized defaults. If you raise the memory frequency or timings. You must raise the memory voltage as well.
    This is an estimate will need actual Kingston part number to set memory to manufacturers specificationsTiming Reference: 800MHz 5-5-5-15-2T at +1.9V / 800MHz 4-4-4-12 at +2.0V
    Also please state Bios and motherboard revision number.
    We have seen some AMD Athlon X2 have a problem with the dual channel mode. You will want to make sure it is the CPU though.
    Try that and let us know how it goes.
    Last edited by artdrivers; 07-13-2010 at 08:44 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  5. #5
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    Default Re: Gigabyte GA-MA785GMT-US2H

    Gigabyte GA-MA785GM-US2H
    (rev. 1.0)

    (F11 latest bios 05/17/2010)

    Kingston Part Number KVR800D2/2GR it also says 1.8 v so I guess I will use the specs for the 1.8 V

    PS: on a similar post on Kingston`s support forum they are suggesting to reduce the frequency of the ram ( from 400 to 333 ) the minimum for my board is 400 (bios)

    thanks

    I will try these things and let you know

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