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Thread: new build won't post




  1. #1
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    Default new GA-H55M-USB3 build won't post

    Hi,

    I just assembled a new build with only the following components:
    Gigabyte GA-H55M-USB3
    i7 860
    G.Skill 2x2Gb DDR3 PC3-12800 ECO Series (7-8-7-24, 1.35V)
    Ati HD5450

    Whenever I turn the machine on, the cpu fan spins for a moment then immediately shuts down and nothing happens. At the same time all 4 multicolor phase leds are lit. The build is not in the case yet, because I always assemble my builds on the desk. I have already tried the following each time getting the exact same (non)result (cpu fan spins only for a moment and nothing else happens):
    - no graphics card
    - only 1 ram stick (both independently in slots 1 & 3)
    - no ram at all
    - 2 different psu's (enermax & antec, both with the additional 8 pin power connector)

    I don't have another 1156 mobo, cpu or more ddr3 ram sticks at hand, so at least for the time being I can't independently verify these to see if there's a problem with one of the components. I haven't noticed any diagnostic beeps or other signals from the mobo - does it have any? Any and all advice/help is most welcome.
    Last edited by tweekTek; 06-16-2010 at 09:21 AM. Reason: improved title

  2. #2
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    Default Re: new build won't post

    With your system turned off, switch the psu off, then press and hold the front panel on/off switch for at least 15 seconds.
    Jumper the CLR_CMOS pins for at least 20 minutes.
    Remove the jumper and try booting with a minimal hardware setup: ps2 keyboard, one memory module, and graphics card only.
    Make sure that your mobo is NOT on a conductive surface (i.e. not resting on the mobo's anti-static bag.
    You might need to remove the cpu and inspect the cpu socket for possible bent pins and signs that the cpu contacts are making good contact.
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  3. #3
    Lsdmeasap's Avatar
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    Default Re: new build won't post

    Also make sure your heatsink back plate is not causing a short, and be sure you have the memory in the correct slots (White ones)

    It could be the 1.35 memory, not sure as I have not tested any myself yet but maybe the board wont start with them because it is trying to use 1.5V default. If that is the case, and again not sure, you would need a different stick of memory so you could get in the BIOS and change the voltage.

    Clearing CMOS as mentioned above would be the first thing to try.

  4. #4
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    Default Re: new build won't post

    thanks for the advice. while i was waiting for a reply i was trying some more stuff (among other things i removed the cmos battery for a few minutes which might have been what brought it to life) though and i managed to boot successfully :) the cpu fan still stops spinning immediately after turning on the power, but then after a few seconds it starts spinning again and the system boots. is this normal?

    this also happens whenever i restart the machine (with ctrl-alt-del from the command line or when i restart my windows pe that i run from cd). again the cpu fan stops spinning, the system looks as if it's turned off for a while, then it starts normally. i never noticed such behaviour with my older non 1156 systems so it seems weird to me, that the fan would turn off on a reboot. haven't yet tried if hdd's turn off also, because i haven't yet connected a hdd to the system (hdd is always the last thing i connect after all the tests have passed).

  5. #5
    Lsdmeasap's Avatar
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    Default Re: new build won't post

    Yes that is normal for now until you get things going.

    Load optimized defaults, then save/apply and reboot back to the BIOS then make any changes you need to such as SATA Settings, memory voltage, ect.

    When you reboot the system will shut down partially and then restart, so what you are seeing sounds normal to me unless I am not understanding you right. We can help you with settings if it turns out to be an issues you are seeing instead of something normal, don't worry.

    Glad you got it going!

  6. #6
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    Default Re: new build won't post

    i've loaded optimized defaults, restarted and everything seemed perfectly fine. the cpu fan would not stop anymore on reboots and i could make my changes in bios. no oc or anything of the sort, as i'm not even planning on overclocking this build, just enabling/disabling features & peripherics as needed. i noticed that on optimized defaults my ram was running on 1333mhz @ 1.584v which i obviously wasn't happy with, so i changed the xmp setting in "advanced memory setting" to profile1 from the default disabled. after a successful reboot bios would now show that ram was at 1600mhz / 1.440v (when choosing profile 1 in "advanced memory settings" the voltage shown there changes to 1.350, but the actual voltage shown in the mit page after a reboot was 1.440v), so i decided to change the dram voltage in "advanced voltage settings" where everything was set to auto. i first tried changing it to 1.400 but there was no change at all - still 1.440v in mit. so i then changed it one further step down to 1.300v, but upon restarting, the cpu fan stopped again for a few seconds and when the system woke up, i received an error warning about possible incorrect settings while overclocking.

    i've since reloaded optimized defaults, but now the cpu fan again stops on each reboot (no matter if i enter in bios or not) and every time i try selecting xmp profile1 as before, i get the oc error warning, even though i'm not touching the advanced voltage settings anymore. how come xmp profile1 worked flawlessly the first time i chose it, but now i get the oc error every time? and how come the cpu fan is again stopping after every reboot on optimized defaults, even though it didn't for several reboots after i first loaded them.

    i printed out a few bios settings in case it helps:

    1. mit info (with optimized defaults loaded, unless stated otherwise):
    bios version: f2 (just checked and f7 is the latest one, which is also the 1st one for rev.2, while mine is rev.1. should i update? and if yes to f6 or f7?)
    bclk: 133mhz
    cpu freq: 2934mhz
    mem freq: 1333mhz (1600 on xmp profile1)
    vcore: 1.168v
    dram: 1.584v (changed to 1.440v after selecting xmp profile1 the first time)
    cpu temp: 33C
    pch temp: 47C
    a note about temps... i touched a few parts after turning off the pc and i was a bit surprised that the small cooler on the chipset near the pci slots (that's the pch right?) was so hot to the touch that i couldn't keep my finger on it for more than a few seconds. same thing with the passive cooler on the 5450 (i bought this one specifically because it's supposed to be very power efficient). the ram chips were quite warm and so was to my greatest surprise the very top end of the mobo (i moved it a bit by grabbing the bottom & top side and felt the warmth). the other edges of the mobo were above room temperature also, but the top one was substantially warmer which i really wasn't expecting (normally the chips & electrolytes get warm, but the board itself on the edges no less?).

    2. advanced memory settings:
    xmp: disabled (default) / profile1 (my setting)
    freq: 1333 (default) / 1600 (on profile1)
    ddr voltage: 1.5v (default) / 1.35v (on profile1)
    qpi: 1.1v / 1.1v
    performance: turbo

    3. advanced freq settings:
    xmp: disabled (default) / profile1 (my setting)
    cpu clock drive: 900mv
    pcie clock drive: 900mv
    clock skew: 0ps

    4. advanced voltage settings: (everything not listed on auto)
    dram: 1.500v (default setting) / 1.400v (my first attempt to get from 1.44 to 1.35 that had no effect on the voltage at all) / 1.300 (my second attempt that resulted in oc error warning and repeated problems since)

    ps. i'm now charging my camera to take pics of bios settings later if necessary

  7. #7
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    Default Re: new build won't post

    since the last post i removed the cmos battery yet again and reloaded optimized defaults. after a reboot i was again able to choose xmp profile1 to get the ram running at 1600 mhz / 1.440v (same as previously on the profile1 setting). further reboots went smooth with the cpu fan never turning off as one would expect. i then ran memtest+ and left it running for 1 and a half passes with no reported errors. BUT after rebooting from within memtest the cpu fan again stopped for a few seconds and upon entering into the mit section of the bios i again got the following oc warning:
    system has experienced boot failures because of overclocking or changes of voltages.
    last setting in this page may not coincide with current h/w states
    so i reloaded optimized defaults yet again, rebooted, and the cpu fan is again stopping on every reboot. i then selected xmp profile1 and upon rebooting got the same oc warning now even before entering the bios, so i'm again where i was before i removed the cmos battery - can't set xmp profile1, fan stops spinning for a few seconds on reboot.

    the exact sequence on a reboot goes like this:
    1. system is running, cpu fan spins, all 4 phase leds are on if in bios. if gone beyond that with some os running, the leds are off.
    2. i initiate a reboot (either with ctrl-alt-del, or by exiting bios) and the monitor goes black (then to sleep), while the phase leds and the fan are still on
    3. after a moment leds and fan turn off
    4. leds turn on and stay on, fan spins only very briefly then stops for a couple of seconds while nothing seems to happen
    5. fan starts spinning again, system & monitor wake up

  8. #8
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    Default Re: new build won't post

    are you using the latest bios for that mb?? if not i would update it first through the bios and q-flash
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  9. #9
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    Default Re: new build won't post

    as stated earlier (guess i overwhelmed the thread with information ;) ) my current bios is f2, while the latest is f7. i also asked already whether i should update and if so, to which version. my mobo is revision 1 and f7 is the first one for revision 2, but there is no mention on the page whether it is for rev2 only, which would make f6 the latest for my mobo. f7 is listed with all the previous versions, so i would assume it's for rev 1 also, but i'd like to be sure before further complicating the situation. here's the bios dl link i'm looking at: GA-H55M-USB3 (rev. 1.0) - GIGABYTE

  10. #10
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    Default Re: new build won't post

    Yes, please do go ahead and update your BIOS.

    Please DO NOT USE @BIOS, use Qflash or DOS, here is a guide
    http://forums.tweaktown.com/f69/bios...h-guide-27576/


    I would use F7, looks like it is for Rev. 1 + 2 as I see it posted on 2 other Rev. one pages, this is normal for some models so you should be fine

    GA-H55M-USB3 (rev. 1.0) - GIGABYTE

    GA-H55M-USB3 (rev. 1.0) - GIGABYTE - Support&Download - Motherboard - BIOS

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