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Thread: GA-EP43-DS3 reboots once, then starts up (usually)




  1. #11
    Chike is offline Senior Member
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Quote Originally Posted by tunstals View Post
    If I can't use my USB keyboard the motherboard is as useful as a chocolate fireguard I'm afraid
    Is this sentimental?
    Never liked USB keyboards myself since the 1st one I had didn't work properly with my 1st P4 board.

  2. #12
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    You can use your USB Keyboard, I just asked so I would know and you mentioned they were new additions. Some are just not 100% Compatible as well, so if these turn out to be an issue you can pickup a $3 adapter and you will be good to go.

    I agree Chike, I don't like USB Keyboard/mice but I use both with PS/2 adapters myself.

    For 8GB I suggest this >>
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 2.40


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] Or disabled since you are not overclocking
    CPU Host Frequency (Mhz) ............: 266 Mhz
    PCI Express Frequency (Mhz) .........:Set to 100

    C.I.A.2 .................................:[Disabled]


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<<
    MCH Clock Skew (ps)...................: <<<


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 3.00A
    Memory Frequency (Mhz) ..............: 800
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................18

    Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go. If you want all can be left in auto, but I do advise setting tRFC and tRD (Static tRead Value) yourself

    Advanced Timing Control
    tRRD...........................................3-5
    tWTR..........................................4-8
    tWR............................................6-10
    tRFC...........................................62-72
    tRTP...........................................3-5
    Command Rate (CMD) ....................:2

    Driving Strength Profiles
    Driving Strength ............................800 or 1066, 1066 may be best

    Channel A
    Static tRead Value.........................:6-9
    tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:6-9
    tRD Phase0 Adjustment...................:Auto <<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control

    CPU
    CPU Vcore….……….........................:Auto if not overclocking, if you are overclocking please do find and set your own voltages

    CPU Termination…..... 1.200V*.......: << If overclocking Please set to stock, Auto overvolts this way to much. Optimal range for overclock would be 1.2-1.5 depending on Vcore, try to keep at least .1 under vcore. Auto is fine if not overclocking

    CPU PLL…………………....1.500V*.......: << If overclocking Please set to stock, Auto overvolts this way to much. Optimal range for overclock would be 1.5-1.65. Auto is fine if not overclocking

    CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly

    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.2-1.34 (for 8GB 1.24-1.28 may be best)
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.500V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave

    DRAM
    DRAM Voltage ……....1.800V............: 2.1-2.2
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave

    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Disabled] << Enabled since you are not overclocking
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled] << Enabled since you are not overclocking
    Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

  3. #13
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Right, just tried to start the bad boy up with no USB devices connected.

    Still the one reboot, then boot-up.

    My PSU is 500watt, I wonder if its enough for the 4870HD? Then again, why would the system reboot once then start up again and work fine, if there was a shortage of power to the card?

    Note: it's bootup thats failing, not the user session in Windows - that is 99% solid! So enough juice must be hitting the card, I'm playing the latest 3D games OK.

    I did have a random reboot yesterday during a session. The first I've had since ever with the mobo, but its not happened again today, I suspect a loose molex (I re-checked them all and ensured tight coupling again.)
    Last edited by tunstals; 08-16-2009 at 11:39 PM.

  4. #14
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Quote Originally Posted by Chike View Post
    Is this sentimental?
    Never liked USB keyboards myself since the 1st one I had didn't work properly with my 1st P4 board.

    Sentimental - no, just mental on my part!

    God knows what made me say that. Maybe just very p'd off.

  5. #15
    Chike is offline Senior Member
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    After that one reboot, if you enter MIT do you get the red warning about overclock?

  6. #16
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Quote Originally Posted by Chike View Post
    After that one reboot, if you enter MIT do you get the red warning about overclock?
    I'm not overclocking, just at default settings - I will take a look.

  7. #17
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Since you are at stock one reboot may or may not be normal. Normally this happens when overclocking, but some BIOS updates may have made this universal as the BIOS checks and verifies the settings, then reboots and applies them

    If you are not seeing a red warning then you are good to go, of course some minor adjustments to voltages or settings could always help as even at stock/auto/default settings can be incorrect or not enough and with 8GB of memory you may have just not found the proper settings yet

    Does the one reboot occur if you only use 2GB or 4GB? Settings to MCH And ram voltage would still be needed for a 4GB test

  8. #18
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    A reboot *every* time the PC is started up?

    That can't be by design, no-one should have to tolerate that! Anyway, as I said I don't recall this happening months back - this is a new phenomenon.

    I suspect its the F9 BIOS or the motherboard is corrupted in some way - I want to roll back to F8 and see if that fixes things. Every BIOS update I have done is with @BIOS, yet I read here it should be done from floppy like in the old days.

    So, with the last roll of the dice, how do I get the DUAL BIOS options to appear? I've pressed everything at POST, I'm not getting to revert to F8 BIOS, thats for sure.


    Edit: will take some sticks of RAM out and retest.
    Last edited by tunstals; 08-18-2009 at 12:39 AM.

  9. #19
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Yes, X58 systems do it three times so feel lucky.

    Yes, please do not use @BIOS, use Qflash via Floppy or USB. Here is a Guide for using Qflash >>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

    You cannot mess with or enter the backup BIOS, not sure what you are meaning though. If you want to go back to F8 you will need to flash to it.

  10. #20
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Why do X58 systems do this 3 times?

    Is this a Gigabyte "feature" or is it a Intel "feature" ?

    /I just bought an I7 and X58 mobo but haven't installed it!!!


    Will rollback using USB stick.

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