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Thread: EP45-DS3L Cold Boot reboot




  1. #1
    Join Date
    Oct 2008
    Posts
    2

    Default EP45-DS3L Cold Boot reboot

    I was cleaning out my case today and noticed something interesting when I plugged back in my system. When I turned on the power, it would start for about a second, turn off then turn back on again and do all the boot procedures. It will work fine if it's shut down and the power supply is still warm. This only occurs when the PSU is turned off then turned back on.

    This is the first time its been happening, though I began overclocking my computer about 4 days ago and got it to 3.0ghz without much problems, after referring to other threads here and other forums. I'm wondering if this cold boot symptom is more setting related than PSU related since this happened post OC.

    I know that the system may shutdown once and reboot if voltage settings are changed in the BIOS but having it shutdown then reboot pushing the on button seems to be something of concern. I've tried a couple options:

    1. Reloading optimized defaults, reboot, then reapplying my settings. No impact.
    2. Disabling C1E and EIST. No impact.

    System Config:
    Intel Q6600 (OC'd to 3.0ghz)
    Arctic Cooling Freezer 7 Pro
    EP45-DS3L
    2*2GB G.Skill DDR2 1000
    Corsair 520HX
    ATi Radeon HD4850 512MB
    1 Seagate 7200.11 1TB (not affected by the bad firmware yay)
    1 Seagate 7200.7 250GB

    I may try reloading the F10 BIOS later if recommended. Below are my settings

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Fast
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.00Ghz


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 333
    PCI Express Frequency (Mhz) .........:100

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


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800mV
    PCI Express Clock Drive.................: 900mV
    CPU Clock Skew (ps)....................: 50ps
    MCH Clock Skew (ps)...................: 100ps


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [333mhz]
    System Memory Multiplier ..............: 2.40B (Note: I've tried 3.20B [1000mhz effective] but I can't seem to get it stable even with my G.Skill DDR2 1000 set)
    Memory Frequency (Mhz) ..............: 800Mhz
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15

    Advanced Timing Control
    tRRD...........................................4
    tWTR..........................................6
    tWR............................................66
    tRFC...........................................57
    tRTP...........................................5
    Command Rate (CMD) ....................:2

    Driving Strength Profiles
    Driving Strength ............................800mhz

    Channel A
    Static tRead Value.........................:8
    tRD Phase0 Adjustment...................:Auto
    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.........................:8
    tRD Phase0 Adjustment...................:Auto
    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….………........1.28750V.................:1.2875 0V
    CPU Termination…..... 1.200V.......: 1.2V
    CPU PLL…………………....1.500V.......: 1.55V
    CPU Reference.…………....0.805V........: Auto

    MCH/ICH
    MCH Core…………….....1.100V...........: 1.2V
    MCH Reference….…….0.800V...........; Auto
    ICH I/O……………….....1.550V............: Auto

    DRAM
    DRAM Voltage ……....1.800V............: 1.8V

    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Enabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Enabled]
    Virtualization Technology................: [Enabled]

    I'm aware that my standard settings inclue C1E and EIST but the system is still stable with those settings on, though Vdroop brings it down to 1.200V under full load. The system passes 30 passes of IBT for Vcore/CPU testing and 6 hrs of Prime95 blend for FSB/mem testing.

    My guess is that this symptom is benign since it doesn't reset my BIOS settings but I'd like to hear from someone like LSD just in case something is wrong with my settings or PSU.

    Thanks

  2. #2
    Join Date
    Sep 2008
    Posts
    990

    Default Re: EP45-DS3L Cold Boot reboot

    This only happens when you overclock, if you set the CPU to stock speed, you won't have this "problem" anymore. This is because the northbridge changes the strap setting (internal chipset timings) from the CPUs default value to a higher OC value. If you turn off the PSU the PC will "forget" this setting and will need to reload it from the BIOS setting which again needs a reboot. This is a common thing with Intel based mainboards and has somethign to do with your exact settings combination, if you change your system memory multiplier this "problem" will likely disappear.


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