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Thread: Different(?) GA-EP45-UD3P reboot loop problem




  1. #1
    Join Date
    Apr 2009
    Posts
    26

    Default Different(?) GA-EP45-UD3P reboot loop problem

    I have a reboot problem with a GA-EP45-UD3P system that seems to be slightly different compared to any of the dozens of other reboot loop problems that I have been reading about here during the past day or two (sadly neither Google nor the forum search have proved to be my friends so far).

    When I first power up the system (physically connect the power, what I will call a hard power on) it works perfectly: boots, runs reliably, passes any number of cycles of OCCT or memtest86+ or whatever.

    I can also reboot the system as often as I please: no problem.

    However, if I shut down the system (soft off) and then turn it on again (just using the usual front panel power push-button, what I will call a soft power on) the power comes on, the case fans and disk drive spin up, then the CPU fan spins up, and then, before the usual power on beep, the whole system switches off, waits for a few seconds, and then the cycle repeats indefinitely. The only way to stop it is to physically remove the power. Next hard power on it works fine again.

    The whole problem is 100% repeatable.

    To simplify matters, I have cut the system down to the following components:
    CPU: E2180 with its stock cooler
    RAM: Kingston KVR800D2N5K2/4G
    PSU: Corsair VX450
    Keyboard: standard PS/2
    Graphics: Sapphire HD4850 625Mhz 512Mb Dual Slot
    I have tried all these same components with a different motherboard (a Gigabyte GA-EP45-UD3) and that works perfectly.

    I have tried different components in the GA-EP45-UD3P motherboard:
    CPU: E5200 with its stock cooler
    RAM: G.Skill F2-6400CL5D-4GBNT
    PSU: SeaSonic PSR430+
    Keyboard: USB
    Graphics: MSI ATI R4670 512M
    but that made no difference: soft power on always results in a reboot loop.

    Note, in both cases, I loaded BIOS optimized defaults, and changed nothing.

    I have tried using just one memory module, and using each of the four slots, but that made no difference.

    I have tried a CMOS reset: no difference.

    I have tried too many variations on BIOS settings to list, based on suggestions made in other threads about reboot loop problems.

    I am reluctant to send the motherboard back for replacement when it is working perfectly once it is booted.

    Is this a simple problem that can be fixed with BIOS settings, or does it sound like a motherboard fault?

    If it matters, here are my current settings (thanks to D-an-W for the template format ):

    Code:
    *************************************
    *************************************
    Gigabyte GA-EP45-UD3P (Rev. 1.0) - F9
    *************************************
    *************************************
    ******************************
    MB Intelligent Tweaker(M.I.T.)
    ******************************
    Robust Graphics Booster ..............: [Auto]
    CPU Clock Ratio ......................: [10x]
    CPU Frequency ........................: 2.00GHz
    ********** Clock Chip Control ********
    >>>>>  Standard Clock Control
      CPU Host Clock Control..............: [Disabled]
      CPU Host Frequency(Mhz).............: 200
      PCI Express Frequency(Mhz)..........: [Auto]
      C.I.A.2.............................: [Disabled]
    >>>>> Advanced Clock Control:
      CPU Clock Drive.....................: [800mV]
      PCI Express Clock Drive.............: [900mV]
      CPU Clock Skew......................: [  0ps]
      MCH Clock Skew......................: [  0ps]
    ******** DRAM Performance Control ********
    Performance Enhance...................: [Standard]
    (G)MCH Frequency Latch................: [Auto]
    System Memory Multiplier (SPD)........: [Auto]
    Memory Frequency(Mhz).................: 800
    DRAM Timing Selectable (SPD)..........: [Auto]
    >>>>> Standard Timing Control
      CAS Latency Time................5...: [Auto]
      tRCD ...........................5...: [Auto]
      tRP.............................5...: [Auto]
      tRAS...........................18...: [Auto]
    >>>>> Advanced Timing Control:
      tRRD............................3...: [Auto]
      tWTR............................3...: [Auto]
      tWR.............................6...: [Auto]
      tRFC...........................52...: [Auto]
      tRTP............................3...: [Auto]
      Command Rate (CMD) .............0...: [Auto]
    >>>>> Channel A Timing Settings:
      Static tRead Value..............3...: [Auto]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel A Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    >>>>> Channel B Timing Settings:
      Static tRead Value..............3...: [Auto]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel B Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    ****** Motherboard Voltage Control ******
    Voltage Types..........Normal...........Current
    -----------------------------------------------
    >>> CPU
    Load-Line Calibration.................: [Disabled]
    CPU Vcore..............1.32500V.......: [Auto]
    CPU Termination........1.200V.........: [Auto]
    CPU PLL................1.500V.........: [Auto]
    CPU Reference..........0.760V.........: [Auto]
    >>> MCH/ICH
    MCH Core...............1.100V.........: [Auto]
    MCH Reference..........0.760V.........: [Auto]
    MCH/DRAM Reference.....0.900V.........: [Auto]
    ICH I/O................1.500V.........: [Auto]
    ICH Core...............1.100V.........: [Auto]
    >>> DRAM
    DRAM Voltage...........1.800V.........: [Auto]
    DRAM Termination.......0.900V.........: [Auto]
    Channel A Reference....0.900V.........: [Auto]
    Channel B Reference....0.900V.........: [Auto]
    ******** Advanced BIOS Features ********
    Hard Disk Boot Priority:
    First Boot Device.....................: [CDROM]
    Second Boot Device....................: [Hard Disk]
    Third Boot Device.....................: [Disabled]
    Password Check........................: [Setup]
    HDD S.M.A.R.T. Capability.............: [Enabled]
    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]
    Delay For HDD (Secs)..................: [0]
    Full Screen LOGO Show.................: [Disabled]
    Init Display First....................: [PEG]
    ******** Integrated Peripherals ********
    USB Keyboard Function.................: [Enabled]
    USB Mouse Function....................: [Disabled]
    USB Storage Function..................: [Enabled]


  2. #2
    KayossZero's Avatar
    KayossZero is offline Junior Member
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    Location
    Jefferson, Maine
    Posts
    88

    Post Re: Different(?) GA-EP45-UD3P reboot loop problem

    Dunno if this helps but I've had a similar issue where if I shut down and flip the switch in the back and/or pull the power plug, I find that when I turn the system back on it boots and then shuts down immediately only unlike you the next time it auto turns back on it works 100% instead of going into an endless reboot cycle.

    I haven't tried it lately after putting the F9 bios on my Mobo (UD3P) or playing with my overclocked settings some more (running at 4GHZ) so I'll have to see if it's any better now.

  3. #3
    Join Date
    Apr 2009
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    J'Habite En Angleterre
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    First thing I would try is setting USB Storage Function to [DISABLED]. Some have had issues with this setting before, such as re-boot loops and not being able to overclock at all, and this has resolved it. USB storage will still work within Windows/Linux, but you will not be able to use Qflash from USB, or save BIOS profiles to USB without re-enabling it.

    If that doesn't solve the problem, start by setting some RAM timings manually, as shown. I'm unsure if tRead=3 will work, I'd try 6 for that for the time being and see if the re-booting stops. You can (and should) tighten this up again by trying 5, 4 then 3 again (3 may work, the FSB is only 200).

    Code:
    MB Intelligent Tweaker(M.I.T.)
    ******************************
    Robust Graphics Booster ..............: [Auto]
    CPU Clock Ratio ......................: [10x]
    CPU Frequency ........................: 2.00GHz
    ********** Clock Chip Control ********
    >>>>>  Standard Clock Control
      CPU Host Clock Control..............: [Disabled]
      CPU Host Frequency(Mhz).............: 200
      PCI Express Frequency(Mhz)..........: [Auto]
      C.I.A.2.............................: [Disabled]
    >>>>> Advanced Clock Control:
      CPU Clock Drive.....................: [800mV]
      PCI Express Clock Drive.............: [900mV]
      CPU Clock Skew......................: [  0ps]
      MCH Clock Skew......................: [  0ps]
    ******** DRAM Performance Control ********
    Performance Enhance...................: [Standard]
    (G)MCH Frequency Latch................: [200]
    System Memory Multiplier (SPD)........: [4.00A]
    Memory Frequency(Mhz).................: 800
    DRAM Timing Selectable (SPD)..........: [Auto]
    >>>>> Standard Timing Control
      CAS Latency Time................5...: [5]
      tRCD ...........................5...: [5]
      tRP.............................5...: [5]
      tRAS...........................18...: [18]
    >>>>> Advanced Timing Control:
      tRRD............................3...: [3]
      tWTR............................3...: [3]
      tWR.............................6...: [6]
      tRFC...........................52...: [52]
      tRTP............................3...: [3]
      Command Rate (CMD) .............0...: [AUTO] This will be 2 regardless, auto is fine.
    >>>>> Channel A Timing Settings:
      Static tRead Value..............3...: [6]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel A Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    >>>>> Channel B Timing Settings:
      Static tRead Value..............3...: [6]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel B Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    ****** Motherboard Voltage Control ******
    Voltage Types..........Normal...........Current
    -----------------------------------------------
    >>> CPU
    Load-Line Calibration.................: [Disabled]
    CPU Vcore..............1.32500V.......: [Auto]<-- Auto is ok if not overclocking. SpeedStep will only adjust idle voltage if this is Auto, otherwise set it to 1.325v
    CPU Termination........1.200V.........: [1.200v]
    CPU PLL................1.500V.........: [1.500v]
    CPU Reference..........0.760V.........: [Auto]
    >>> MCH/ICH
    MCH Core...............1.100V.........: [1.200v]
    MCH Reference..........0.760V.........: [Auto]
    MCH/DRAM Reference.....0.900V.........: [Auto]
    ICH I/O................1.500V.........: [1.500v]
    ICH Core...............1.100V.........: [1.100v]
    >>> DRAM
    DRAM Voltage...........1.800V.........: [1.800v]
    DRAM Termination.......0.900V.........: [Auto]
    Channel A Reference....0.900V.........: [Auto]
    Channel B Reference....0.900V.........: [Auto]
    ******** Advanced BIOS Features ********
    Hard Disk Boot Priority:
    First Boot Device.....................: [CDROM]
    Second Boot Device....................: [Hard Disk]
    Third Boot Device.....................: [Disabled]
    Password Check........................: [Setup]
    HDD S.M.A.R.T. Capability.............: [Enabled]
    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]
    Delay For HDD (Secs)..................: [0]
    Full Screen LOGO Show.................: [Disabled]
    Init Display First....................: [PEG]
    ******** Integrated Peripherals ********
    USB Keyboard Function.................: [Enabled]
    USB Mouse Function....................: [Disabled]
    USB Storage Function..................: [DISABLED]
    Last edited by Psycho101; 05-07-2009 at 01:01 AM.

  4. #4
    Join Date
    Apr 2009
    Posts
    26

    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    Quote Originally Posted by Psycho101 View Post
    First thing I would try is setting USB Storage Function to [DISABLED]. Some have had issues with this setting before, such as re-boot loops and not being able to overclock at all, and this has resolved it. USB storage will still work within Windows/Linux, but you will not be able to use Qflash from USB, or save BIOS profiles to USB without re-enabling it.
    No change.
    If that doesn't solve the problem, start by setting some RAM timings manually, as shown. I'm unsure if tRead=3 will work, I'd try 6 for that for the time being and see if the re-booting stops. You can (and should) tighten this up again by trying 5, 4 then 3 again (3 may work, the FSB is only 200).


    Code:
    MB Intelligent Tweaker(M.I.T.)
    ******************************
    Robust Graphics Booster ..............: [Auto]
    CPU Clock Ratio ......................: [10x]
    CPU Frequency ........................: 2.00GHz
    ********** Clock Chip Control ********
    >>>>>  Standard Clock Control
      CPU Host Clock Control..............: [Disabled]
      CPU Host Frequency(Mhz).............: 200
      PCI Express Frequency(Mhz)..........: [Auto]
      C.I.A.2.............................: [Disabled]
    >>>>> Advanced Clock Control:
      CPU Clock Drive.....................: [800mV]
      PCI Express Clock Drive.............: [900mV]
      CPU Clock Skew......................: [  0ps]
      MCH Clock Skew......................: [  0ps]
    ******** DRAM Performance Control ********
    Performance Enhance...................: [Standard]
    (G)MCH Frequency Latch................: [200]
    System Memory Multiplier (SPD)........: [4.00A]
    This had to be 4.00C (I am sure you meant that, but just in case...)
    Code:
    Memory Frequency(Mhz).................: 800
    DRAM Timing Selectable (SPD)..........: [Auto]
    Obviously needed to be Manual so I could set the timings below.
    Code:
    >>>>> Standard Timing Control
      CAS Latency Time................5...: [5]
      tRCD ...........................5...: [5]
      tRP.............................5...: [5]
      tRAS...........................18...: [18]
    >>>>> Advanced Timing Control:
      tRRD............................3...: [3]
      tWTR............................3...: [3]
      tWR.............................6...: [6]
      tRFC...........................52...: [52]
      tRTP............................3...: [3]
      Command Rate (CMD) .............0...: [AUTO] This will be 2 regardless, auto is fine.
    >>>>> Channel A Timing Settings:
      Static tRead Value..............3...: [6]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel A Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    >>>>> Channel B Timing Settings:
      Static tRead Value..............3...: [6]
      tRD Phase0 Adjustment...........0...: [Auto]
      tRD Phase1 Adjustment...........0...: [Auto]
      tRD Phase2 Adjustment ..........1...: [Auto]
      tRD Phase3 Adjustment...........1...: [Auto]
      Trd2rd(Different Rank)..........6...: [Auto]
      Twr2wr(Different Rank)..........6...: [Auto]
      Twr2rd(Different Rank)..........5...: [Auto]
      Trd2wr(Same/Diff Rank)..........8...: [Auto]
      DIMM1 Clock Skew Control (ps).......: [Auto]
      DIMM2 Clock Skew Control (ps).......: [Auto]
      DDR Write Training..................: [Auto]
    >>>>> Channel B Driving Settings:
      Driving Strength Profile............: [Auto]
      Data Driving Pull-Up Level..........: [Auto]
      Cmd Driving Pull-Up level...........: [Auto]
      Ctrl Driving Pull-Up Level..........: [Auto]
      Clk Driving Pull-Up Level...........: [Auto]
      Data Driving Pull-Down Level........: [Auto]
      Cmd Driving Pull-Down level.........: [Auto]
      Ctrl Driving Pull-Down Level........: [Auto]
      Clk Driving Pull-Down Level.........: [Auto]
    ****** Motherboard Voltage Control ******
    Voltage Types..........Normal...........Current
    -----------------------------------------------
    >>> CPU
    Load-Line Calibration.................: [Disabled]
    CPU Vcore..............1.32500V.......: [Auto]<-- Auto is ok if not overclocking. SpeedStep will only adjust idle voltage if this is Auto, otherwise set it to 1.325v
    CPU Termination........1.200V.........: [1.200v]
    CPU PLL................1.500V.........: [1.500v]
    CPU Reference..........0.760V.........: [Auto]
    >>> MCH/ICH
    MCH Core...............1.100V.........: [1.200v]
    MCH Reference..........0.760V.........: [Auto]
    MCH/DRAM Reference.....0.900V.........: [Auto]
    ICH I/O................1.500V.........: [1.500v]
    ICH Core...............1.100V.........: [1.100v]
    >>> DRAM
    DRAM Voltage...........1.800V.........: [1.800v]
    DRAM Termination.......0.900V.........: [Auto]
    Channel A Reference....0.900V.........: [Auto]
    Channel B Reference....0.900V.........: [Auto]
    ******** Advanced BIOS Features ********
    Hard Disk Boot Priority:
    First Boot Device.....................: [CDROM]
    Second Boot Device....................: [Hard Disk]
    Third Boot Device.....................: [Disabled]
    Password Check........................: [Setup]
    HDD S.M.A.R.T. Capability.............: [Enabled]
    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]
    Delay For HDD (Secs)..................: [0]
    Full Screen LOGO Show.................: [Disabled]
    Init Display First....................: [PEG]
    ******** Integrated Peripherals ********
    USB Keyboard Function.................: [Enabled]
    USB Mouse Function....................: [Disabled]
    USB Storage Function..................: [DISABLED]
    Sadly no change: a soft power on still gets into a reboot loop with these settings.

  5. #5
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    Apply all the recommended settings in this post, including the "overclocked" settings.
    Please follow the instructions for adding your hardware list to your forum signature and add a link to your ram's specifications.

    Some of these settings are covered in Psycho101's post.

    Include a screenshot that includes:
    Memset using the SPD and ">>" tabs
    cpu-z main screen
    EasyTune6 --> TUNER tab --> ADVANCE tab --> VOLTAGE tab
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  6. #6
    Join Date
    Apr 2009
    Posts
    26

    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    Quote Originally Posted by profJim View Post
    Apply all the recommended settings in this post, including the "overclocked" settings.
    OK, done that (tried four times, once each with MCH Core at 1.05V, 1.10V, 1.20V and 1.24V). No difference, they all get into the reboot loop.
    Please follow the instructions for adding your hardware list to your forum signature
    Actually I have done that, but since the system I am posting about here is not my own I figured it would only confuse people if I left in my signature with a different system, so I deliberately turned it off. I did however list the relevant hardware in my post. Here it is again:
    CPU: E2180 with its stock cooler
    RAM: Kingston KVR800D2N5K2/4G
    PSU: Corsair VX450
    Keyboard: standard PS/2
    Graphics: Sapphire HD4850 625Mhz 512Mb Dual Slot
    and add a link to your ram's specifications.
    This is the best I can find:
    Include a screenshot that includes:
    Memset using the SPD and ">>" tabs
    cpu-z main screen
    EasyTune6 --> TUNER tab --> ADVANCE tab --> VOLTAGE tab
    Attached (screen captures done with MCH Core at 1.20V).

    By the way, thanks for the link to that thread about a similar problem with a GA-EP43-UD3L. He ended up replacing his motherboard to fix his problem, and it is beginning to look like that may be what I need to do too. I really don't think I should need any special settings in order to boot a supported CPU at stock speeds...

  7. #7
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    New mobo failures are rare, but they do happen.

    Your forum signature is tied to your profile, not the system that you're using to access the forums. I'm currently using my backup system while I'm stress testing the machine listed in my signature.
    I really don't think I should need any special settings in order to boot a supported CPU at stock speeds...
    I agree but the fact is that the procedures in that post have fixed many problems with new mobos and "cured" many boot problems with existing mobos that have had hardware or bios updates. Loading FAIL-SAFE settings almost guarantees that your system will have problems.

    Seasonic is one of the top tier psu makers on the market. Try testing with a different psu to rule out the psu as the problem.

    Check out this post for additional testing options.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  8. #8
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    tRD (Static tRead) of 3 is the issue here for sure!! Set that to 7-10 for now

  9. #9
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    Quote Originally Posted by profJim View Post
    Seasonic is one of the top tier psu makers on the market. Try testing with a different psu to rule out the psu as the problem.
    I have now tried four PSUs: a Corsair VX450, a Corsair VX550, a Seasonic PSR430+, and a cheap Coolermaster PSU that came free with a case. All four work powering systems that are identical except for the motherboard. But with the GA-EP45-UD3P all four go into the reboot loop (always only with a soft power on, never any problem booting with a hard power on).
    Check out this post for additional testing options.
    I am afraid that I had already tried all the suggestions there before I made my first post.

  10. #10
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    Default Re: Different(?) GA-EP45-UD3P reboot loop problem

    Quote Originally Posted by Lsdmeasap View Post
    tRD (Static tRead) of 3 is the issue here for sure!! Set that to 7-10 for now
    FSB is only 200, so does that mean a Static tRead of 3 is only equivalent to what 6 would be at an FSB of 400?

    Anyway, just went away and tried both 7 and 10 (starting from the settings suggested by Psycho101, those suggested by profJim, and also starting from the BIOS optimized defaults). No effect: still the same reboot loop.

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