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Thread: GA-EP45-DQ6 bios reboot loop infinity




  1. #1
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    Default GA-EP45-DQ6 bios reboot loop infinity

    Dear All,

    My GA-EP45-DQ6 goes sometime in infinity reboot loop, but I've gone through posts and didn't found the exact clue.

    My config is:
    EP45-DQ6 v1.0
    Core 2 Duo E8600 Socket 775 with Noctua NH-U12P coolfan.
    Memory Corsair PC8500 ref CM2X1024-8500C5D (5-5-5-15), 4 banks of 1Gb.
    Video Card Sapphire HD8500 1 slot of PCI-e x16 (blue slot inserted)
    All SATA orange used , no SATA pink used.

    Sometimes, BIOS loops after 'Memory Tes' (whithout the final T)
    Sometime it goes further but loops before hard drive detection
    Sometime it loops after bios name eg GA-EP45-DQ6 F12 (same with GA-EP45-DQ6 F13a or GA-EP45-DQ6 F11)

    More strange : Sometime when I left the PC unpowered for a long time (one night), it emits a long continous beep at next start, but my video card is well inserted and not moved since last reboot.

    I've tested Bios F11, F12, F13a.

    1- Can you please sum-up where this infinity loop comes from, regarding your own experiences ? Memory problems, video problems....
    2- What is/are the tests to be done to get the clue?
    I've just purchased new memory chips to test but not get them yet. (Gskill PC2-8800-F2-8800CL5Q-8GBPI)

    Thx for ideas.
    Hervé

  2. #2
    Lsdmeasap's Avatar
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Does your system work at all, or are you always stuck in this loop? If you are always stuck please try clearing your CMOS and starting the system with only 1 stick of ram. See my method in Post #2 here for clearing the CMOS >>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

    If you can ever get into your BIOS you need to set Performance Enhance to standard, set your ram voltage and add some MCH Voltage. And check and be sure your Static tRead is not to low (6/7-10 333/B MCH - 8/9-12 400/D MCH)

  3. #3
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Hi,

    I'm not locked. Most of the time it run up to Vista64. Maybe after 2 or 3 reboots most of the time...If locked, I can clear the CMOS the run again.
    So I will try you first change:
    Standard Performance
    MCH Voltage. As I am at 333*10 = 3,3GHz CPU, I guess it is 6/7-10 333/B

    Keep in touch for test result.
    Thx
    Hervé

  4. #4
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Ahh ok, then ya be sure you manually set your ram to it's spec voltage and then add some MCH Voltage, maybe 1.2-1.24 would be good.

    The Static tRead value setting depends on what Memory Multiplier you are using. Here is a image showing them all, if you are using a B one then yes use 6-10 starting with 10 and working your way down testing as you go >>>


  5. #5
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Hi,

    Made some tweak but nothing changed.

    Before trying new parameter adjustments:
    Can you precise me please what means a LONG beep continuous at startup, even if I push reset button, LONG beep continues (just stops one second) without ending?
    [some posts says it is a Video Card bad insertion, but I didn't move it; some precise wrong DDRAM, but after boot success, I can do my job a whole day without crash in Windows Vista]

    This occurs if I leave a long time my board without booting it, like a night or so (not tested shorter time).

    Pushing ClearCmos button, then loading 'last known good bios' , and system starts well again.

    Thx
    Hervé

  6. #6
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Can you record this beep and upload it somewhere for me to hear please? It is often Graphics card, which could mean your PSU Does not support your Card + System very well.

    It could also mean bad ram timings/voltages as you also said. Please post for me the full settings you are using, and if you can record and upload this beep so I can hear it >>>

    And do tell me for sure which ram you are using and how much too as you mentioned two kinds above

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

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: 
    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...........................: <<< 
    PCI Express Clock Drive.................: <<< 
    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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:
    CPU Termination…..... 1.200V*.......: <<< Leave
    CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much
    
    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……………….....1.550V............: <<< 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

  7. #7

    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    i had the same problem with my udp, turned out to be a bad stick of ram, try booting up with one stick of ram at a time in all slots, and if there is one stick of ram that doesnt work in any of the slots than its a bad stick of ram

  8. #8
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    Please find my test report at GA-EP45-DQ6 Test Jan' 07 2009
    under today's date 20090107-01

    I've gone to minimum hardware (removed 2 PCI cards, unconnected 6 SATA disks, but didn't moved the video card at blue slot) so to debug and included an 'Everest' file report of my configuration.

    Harware Config today 2009 01 07 - 01:
    -------------------------------------
    No PCI slot used
    Graphic card HD4850 Sapphire in PGA blue slot x16 with PCI-E power connector connected
    Only Sata2_0 and Sata2_1, 2* Samsung HD103UJ disks - All other disks unconnected at power and sata cables.
    Memory is 4* DIMM Corsair XMS2 CM2X1024-8500C5D Q => See Everest report attached for timings.

    At first day boot, after long night motherboard off, power surge plugged, no long beep sound. Only the classical short beep.
    The bios stops after 'Memory Tes' (without the T) then reboots and goes up to Vista login without problem at second pass.

    During Bios the Raid/AHCi screen appears, but no Raid installed for the 2* Samsung HD103UJ disks.

    Why the POST reboots after 'Memory Tes' (without the T)?

    Goal:
    -----
    I investigate further, first by changing memory timing, then adding PCI cards and then connecting back my other 6 SATA disks. Wait a whole night between tests so trying to catch back this long beep at startup.
    Last edited by galmiche; 01-07-2009 at 04:14 PM.

  9. #9
    Lsdmeasap's Avatar
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    Default Re: GA-EP45-DQ6 bios reboot loop infinity

    The long beeps are normally related to ram. Did you try with only one stick? Can you borrow different ram to test with? Any DDR2 will be fine

    Can you test this ram one by one with memtest86+ >>>
    Memtest86+ - Advanced Memory Diagnostic Tool

    In your system or any other. If you can get into the BIOS please do change performance enhance to standard and set your ram voltage

    And if you still have issues can you please fill out the above template and post it back here with what settings you are using that fail you

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