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




  1. #1
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    Default GA-EP43-DS3 reboots once, then starts up (usually)

    I've had an EP43 for about 6 months, for 5 months the motherboard was fine but now when I switch on, the system powers up, always reboots once (no POST screen shows) and then starts up.. mostly.

    The only difference with my setup is a USB keyboard.

    I've not tried it without unplugging the USB keyboard yet, I'll do so tonight, but in case that doesn't work, anything else that causes such reboots? The reboot process goes as follows:

    1) CPU Fan spins up then slows down to normal
    2) CD drive LED comes on
    3) System reboots

    Steps 1-3 above repeat, except this time the system starts up (mostly) - on the odd occasion the fan makes a very strange noise and the system switches off. I leave the system off for 10 secs then restart the system and it works.

    I used to have the system permanently rebooting when a USB external hard disk was plugged in, but now the keyboard and mouse are the only USB devices attached.

    My system spec:

    GA-EP43-DS3 with F9 BIOS
    Intel Q6600
    8GB DDR2 RAM OCZ
    Radeon 4870HD
    Unbranded hard disk (750GB)
    Asus Xonar

    System is not overclocked in any way whatsoever.

    Any ideas? Once the machine's actually up and running it's 100% stable.

    Also, can you tell me where I can find an @BIOS file for version F8? I downloaded the F8 BIOS file from Gigabyte but @BIOS froze when trying to load it, I guess its not compatible (not that the website says)

  2. #2
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Always remove all cd&dvd's when finished using them and before shuting down your system. No need in having cd&dvd's spinning in drives when your not using them.
    Last edited by artdrivers; 08-10-2009 at 09:25 PM.
    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
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    Microsoft comfort curve USB keyboard 2000 ver.1.0
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  3. #3
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    You may need to enable "Legacy USB Storage Detect" in the Integrated Peripherals BIOS page for your USB Devices to work fully.

    Please DO NOT USE @BIOS to flash, please use Qflash with a USB Or Floppy, or use DOS. @BIOS should only be used as a last resort and even then I advise trying other ways.

    Please read this thread about flashing with Qflash, and if you have any questions feel free to ask
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

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

    Hi guys, thanks for replying.

    My USB mouse and keyboard are new, I'm using a Razer 1600dpi mouse and a Microsoft keyboard. I'll try this when I'm at my PC next.

    Is this a known issue? Surely the system would reboot all the time by repeating the same process then failing, not just once and then work OK?

    Regarding QFlash - point taken. I have no floppy drive but I'll check if I can boot from a USB stick.

    I'll let you know if your solution works. Thanks again for your help.

    Regards,
    Scott

  5. #5
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    Yes, some USB Devices cause issues at startup so USB Storage Detect must be disabled.

    And sadly yes some either way always have issues. Once you get some testing done if you find it to be an issue no matter what I will try to get a report in on it in a few weeks and see if a BIOS update can address the issue

    One reboot is normal as the system checks the settings, then reboots and applies them. Three or more is not normal and two-three can happen normally as well when making certain BIOS changes.

    Are you overclocked? If so that is why the one reboot, at stock it should boot normally as defaults would not often need to be checked

    You can boot from USB, see my guide above for how to make a bootable USB Stick. If you need help with that let me know.

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

    Hi, Legacy USB storage detect is *disabled* (I had said Enabled before), USB keyboard is enabled and USB mouse is disabled.

    The system spins up the fans, reboots once then works OK....

    So, no idea what to do now.

    Scott
    Last edited by tunstals; 08-13-2009 at 08:30 PM.

  7. #7
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    What is your issue, the one reboot? This is normal if overclocked. Are you overclocked, if so how stable is your system, you have tested right?

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

    Well normally there's one reboot, but on more than the one occassion the fans haven't spun up properly on POST.

    The system is not overclocked and never has been. Most components are less than 3 months old, only the CPU is older than a year.

    The only thing that has changed is that I've added a USB mouse *AND* keyboard - but why should they cause any reboots?

  9. #9
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    Default Re: GA-EP43-DS3 reboots once, then starts up (usually)

    K, well with 8GB of ram you have to make some changes in the BIOS.

    Lets have your settings and I will advise back >>

    This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

    CPU = Model #
    Motherboard = Model, Revision #
    BIOS Version =
    Ram = Brand, Model#, Part#, And or Link

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 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 ..............: 
    Memory Frequency (Mhz) ..............: 
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................
    tRCD .........................................
    tRP'...........................................
    tRAS..........................................
    
    Set all Suggested below to highest Values first.  Then later you can lower, one at a time, testing as you go
    
    Advanced Timing Control
    tRRD...........................................
    tWTR..........................................
    tWR............................................
    tRFC...........................................
    tRTP...........................................
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................
    
    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     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.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     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...........: << 
    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............: 
    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]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    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

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

    CPU is Quad Core Q6600 (not the energy efficient version)
    Motherboard is GA-EP43-DS3 (revision to follow)
    BIOS version is F9

    RAM is here:
    OCZ Gold Edition 4GB (2x2GB) PC2-6400C5 Dual Channel Series (OCZ2G8004GK)


    No RAM timings have been changed, no overclocking, no underclocking, no tweaks whatsoever, just "Load Optimal Defaults" from the BIOS.

    This system WORKED PERFECTLY when I bought it in December, with 8GB of RAM. It's only recently its rebooting, I suspect it is the USB keyboard causing the issue (yes, I still haven't tried booting without it, I'm bit busy right atm lol)

    If I can't use my USB keyboard the motherboard is as useful as a chocolate fireguard I'm afraid

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