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Thread: EX58-UD4P Constant Reboots




  1. #1
    Join Date
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    Default EX58-UD4P Constant Reboots

    EX58-UD4P (F8,F9b,F9d,F9 FINAL)
    i7 920 (SWAPPED WITH ANOTHER 920 FOR TESTING PURPOSES)
    EX58-UD4P (F8,F9b,F9d,F9 FINAL)
    i7 920 (SWAPPED WITH ANOTHER 920 FOR TESTING PURPOSES)
    XIGMATEK HDT-S1283
    OCZ GOLD 6GB OCZ3G1600LV6GK<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
    CORSAIR 750HX (REPLACED A 550VX)<o:p></o:p>
    VISTA ULTIMATE 64<o:p></o:p>
    <o:p></o:p>
    For the first three weeks this board/CPU/memory combo was dead solid. It ran at 3.5 Ghz without a problem. To date I have never had a BSOD or freeze except for when I was finding the upper limits of my memory early on. <o:p></o:p>
    <o:p></o:p>
    The problem is this system reboots whenever the hell it feels like it. It will reboot during games, it will reboot at idle when the CPU is idle (29-31C temp). It will reboot when I am in the BIOS screen. It will reboot no matter the dozens of voltage combinations I try. I have swapped RAM, I swapped CPUs, I swapped PSUs, I have unplugged fans from all headers, I have removed the motherboard from the case and booted with only a hard drive hooked up. I have tried every combo I can think of and I am out of options (I think). I tried voltage settings listed in this forum, I have tried numerous memory timings & voltages. <o:p></o:p>
    <o:p></o:p>
    I built a rig for a customer (920 with a EX58-UD4P) and it had been flawless, which is why I went with the same combo. I am lost and would welcome any ideas. I will be happy to provide any more info you need.<o:p></o:p>
    <o:p></o:p>
    Thank you.

  2. #2
    SolidBladez's Avatar
    SolidBladez is offline Member
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    Default Re: EX58-UD4P Constant Reboots

    Does it reboot when at stock? What kinds of test(s) did you use to determine the stability at 3.5GHz?

  3. #3
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    Default Re: EX58-UD4P Constant Reboots

    Quote Originally Posted by SolidBladez View Post
    Does it reboot when at stock? What kinds of test(s) did you use to determine the stability at 3.5GHz?
    It reboots at stock speeds, it reboots at lower than stock speeds, it reboots at silly slow memory speeds.

    I ran Orthos and Intelburn test for stability checks. It will still go through burn test with no errors, sometimes for hours........until it reboots. Like I said, never a BSOD, never a freeze, just constant reboots. It can run fine for hours, it can reboot every few minutes, CPU load/speed has no bearing on the problem.

  4. #4

    Default Re: EX58-UD4P Constant Reboots

    try two pieces of the ram, make sure at stock speeds your running the uncore at twice the speed of the ram.

    I had a bad kit of the 1333LVGK and it would hard restart when superpi'ing at 32M but only in triple channel, after borrowing and trying a kit of (QVL) cheapy kingston 1333, I worked out it was a bad kit, got it swapped under doa and all was well, never had a problem with instability/hard restarts since.
    Gaming: GIGABYTE X58-UD5 - i7 920 C0 - Noctua NH-U12P - 6GB OCZ Platinum PC3-10666 CL7 - Sapphire HD5870 - Antec P182 - TruePower Trio 650w - 3 Acer X243HB in Eyefinity - 2 x 500GB ST3500320AS 7200.11, SD1A - MS Digital Media KB - Windows 7 Ultimate x64

    Server: - HP Proliant MicroServer N36L - 4GB Team 1333 CL9 - 1x 160 2.5 5400RPM - 2x 500GB ST3500320AS 7200.11, SD1A - 1x 250GB ST3500320AS 7200.12 - 1x 1.5TB ST3500320AS 7200.12

    HTPC1
    : GIGABYTE EP45-UD3L - E7600 - 2GB Corsair DHX 800 C5 - GIGABYTE 8500GT - Antec Fusion - Microsoft Comfort Wireless / Logitech MX1000 bt - Windows 7 Ultimate x64

    HTPC2
    : GIGABYTE 945GCMX-S2 - E6320 - 2GB Corsair DHX 800 C5 - GIGABYTE 7600GT - Antec Fusion - Windows 7 Ultimate x64


    HTPC3:
    GIGABYTE P35-DS4 - E6750 - 4GB OCZ System Elite 800 - GIGABYTE 8800GTX - TT Shark - Earthwatts 500w - DeNovo Mini - Windows 7 Ultimate x64

  5. #5
    Join Date
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    Default Re: EX58-UD4P Constant Reboots

    Well, I have run the system with 1,2 and 3 sticks. I have run the sticks in different slots. It is hard for me to accept all 3 sticks have problems in all 3 slots. I have to work on other peoples stuff all day long, it just bites when my stuff acts up as well.

    Will verify uncore/RAM ratio.

  6. #6
    Join Date
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    Default Re: EX58-UD4P Constant Reboots

    Unusual though it may be I would tend to suspect the Corsair HX850. Even the very best PSUs go bad. In my experience the spontaneous reboot problem has almost always been a bum PSU.
    Try a substitute and see if it works.
    i7 920 DO @ 4410 210*21 Watercooled
    Gigabyte GA-Ex58 ud4p
    3X2gb Mushkin DDR3 1600
    2x4870 1GB Ati Crossfire.
    Intel X-25M SSD OS drive
    G.Skill Titan 128gb SSD X2 RAID 0 Data
    Corsair HX850 PSU
    Windows 7 x64 7600

  7. #7
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    Default Re: EX58-UD4P Constant Reboots

    Well, I replaced the PSU, moving from the 550VX to the 750HX. It was doing the same thing with both PSUs. My old setup is now the family HTPC and I needed the 550VX for that. Like I said, it acted up with both PSUs. I even went so far as to set up my Fluke on a spare molex to monitor voltage on the 550, and it was rock solid 12.16 volts even during reboots. A bad PSU crossed my mind early on as I have read about that problem.
    Last edited by punisher; 08-15-2009 at 11:13 AM.

  8. #8

    Default Re: EX58-UD4P Constant Reboots

    about the uncore discussion, i found when I raised my dram multi up to 10 (so my ram ran at its proper 1333) the uncore would still only run at 2.1ghz when set to auto, this caused me instability, after raising my uncore multi to 20 (2.6Ghz), those problems went away, but as i mentioned i also found i had a bad kit of ocz ram aswel which caused me intermittent hard restarts when in tri chan.

    Since you work on systems all day much like myself, i dont need to say, strip it down etc etc borrow test parts. etc :)

    Im confident you'll work it out.
    Gaming: GIGABYTE X58-UD5 - i7 920 C0 - Noctua NH-U12P - 6GB OCZ Platinum PC3-10666 CL7 - Sapphire HD5870 - Antec P182 - TruePower Trio 650w - 3 Acer X243HB in Eyefinity - 2 x 500GB ST3500320AS 7200.11, SD1A - MS Digital Media KB - Windows 7 Ultimate x64

    Server: - HP Proliant MicroServer N36L - 4GB Team 1333 CL9 - 1x 160 2.5 5400RPM - 2x 500GB ST3500320AS 7200.11, SD1A - 1x 250GB ST3500320AS 7200.12 - 1x 1.5TB ST3500320AS 7200.12

    HTPC1
    : GIGABYTE EP45-UD3L - E7600 - 2GB Corsair DHX 800 C5 - GIGABYTE 8500GT - Antec Fusion - Microsoft Comfort Wireless / Logitech MX1000 bt - Windows 7 Ultimate x64

    HTPC2
    : GIGABYTE 945GCMX-S2 - E6320 - 2GB Corsair DHX 800 C5 - GIGABYTE 7600GT - Antec Fusion - Windows 7 Ultimate x64


    HTPC3:
    GIGABYTE P35-DS4 - E6750 - 4GB OCZ System Elite 800 - GIGABYTE 8800GTX - TT Shark - Earthwatts 500w - DeNovo Mini - Windows 7 Ultimate x64

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EX58-UD4P Constant Reboots

    Can you borrow a different brand of PSU? Some have been known to have issues, especially this one if the model is an older one as Seasonic's found an issue with them and have remade the lineup due to that.

    Uncore must always be 2x the memory multi, or above

  10. #10
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    Default Re: EX58-UD4P Constant Reboots

    Well, besides my two Corsairs, I have an old Enermax 375 I suppose I could try.

    Anyways, I moved RAM around, again, and ran Memtest last night (no errors), swapped in another stick and ran it again this morning for about 9 hours (no errors). Just paranoid about the RAM I suppose.

    If you could, have a look at some of my current settings and see if anything sticks out as a problem. Thanks again for all of the help, it is much appreciated.

    QPI CLOCK RATIO 36
    RAM 1333
    QPI 3333
    LOAD LINE CALIBRATION ENABLED
    CPU CORE 1.2525V NORMAL
    QPI/VTT 1.175V
    IOH CORE 1.1V
    DRAM VOLTAGE 1.64 V
    RAM TIMING 8-8-8-24-1

    I played with QPI ratios and had it at 2666 (twice RAM speed) and it made no difference.

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