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Thread: Unstable Z77M-D3H




  1. #1
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    Question Unstable Z77M-D3H

    Hi
    I have just built a new PC based on a Z77M-D3H motherboard with an Intel Core i5 3570K processor and it keeps freezing.
    I have upgraded the BIOS to the latest (F12) and that hasn't helped. Sometime sit will run for 5 minutes sometimes for 15 then it jys locks up and teh lights go out on teh USB keyboard and mouse but the screen keeps the same image but frozen. It does this in Windows 7 (64 bit) or even if I leave it in the BIOS screen.
    If I run Prime85 to stress test it it always locks in about 30 seconds !
    I have tried talking out the Radeon graphics card and running off the on board graphics chip but still the same. Also I tried running one memory stick at a time out of the two and again it keeps freezing.
    CPU temperature seems fine at about 45c at idle and doesn't go up before it crashes.
    DRAM is 8gb (2x4gb) of Crucial Ballistics Sport DDR 3 1600Mhz. PSU is an OCZ ZS series 650W.

    Any ideas as its driving me mad ?

    Thanks

    Pat

  2. #2
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: Unstable Z77M-D3H

    Did you try the system with its current bios? If so was it stable then? Also when you flashed bios did you make sure to update backup bios? If not boot into bios and load optimized defaults and press f10 as quick as possble before it locks up on you. Then at boot hold down the "ALT"+"F10" key while using a wired keyboard and it should boot to a screen to update the backup bios.

    see if that helps with both bios on the same version. If not or if it was stable on older bios flash back or before updating backup bios you can invoke the backup bios to reflash the main bios with the older version by booting and pressing the ctrl+f10 I believe.
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  3. #3
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    Default Re: Unstable Z77M-D3H

    I started off with the F4 BIOS it came with and that was unstable. I then upgraded to F9 and today F12. Same with all of them. Works for 2 to 30 minutes then freezes. I am running on optimized defaults and have been with each BIOS version, no overclocking. Just web browsing or running Minecraft (my son) it runs for a random time up to 30 minutes. Prime95 crashes it in about 30 seconds or less.

  4. #4
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    Default Re: Unstable Z77M-D3H

    Why would having the main and backup BIOS on the same version help ?

  5. #5
    basschilperoord is offline Junior Member
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    Exclamation Re: Unstable Z77M-D3H

    Hey mate, I'm running my hardware on the same motherboard as you do and it's stable as far as I can tell.

    1. Do you have any special USB devices connected?
    2. Can you check if your heatsink and CPU are seated properly? First turn the heatsink arrows to the way they point, then plug it in the mobo with the CPU in its place (locked). Then push all the 4 pins until you hear a click, which means they're good. Now turn the arrows in the inverted direction and that will mean that the HSF has been succesfully installed.
    3. Double-check every cable connected to the hardware and motherboard.
    Last edited by basschilperoord; 08-30-2012 at 04:46 AM.

  6. #6
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    Default Re: Unstable Z77M-D3H

    IDK did you reset CMOS after updating bios? Although its not required its recommend. Then load optimized defaults.

  7. #7
    Acebmxer's Avatar
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    Default Re: Unstable Z77M-D3H

    There is some cross talk between each bios. it shouldnt really matter but it does help most of the time.

    Other thing to check would be maybe bent cpu pin. Are you using the stock intel cooler? Make sure all 4 pins are still locked down and have not popped up. if you do pull the cpu to check for pins make sure to reaply thermal compound.
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  8. #8
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    Default Re: Unstable Z77M-D3H

    Yes I am using the stock cooler. When it first wouldnt work properly I cleaned the cooler and CPU and used Artic Silver instead. Temp seems stable at 455c.
    I will pull the CPU and check for bent pins tomorrow,

  9. #9
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    Default Re: Unstable Z77M-D3H

    if its locking up chances are its memory and or voltage related,even at stock settings,would be an idea to test with another psu,ive seen a few compatibility issues with ocz and gigabyte boards but id rate the memory being the cause before psu
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  10. #10
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    Default Re: Unstable Z77M-D3H

    Well I have reseated the CPU and tried a a new stick of RAM I borrowed from a friend and its worse !
    It will now sit iin the BIOS screen for a couple of hours before without looking up but wont run an OS.
    With Windows 7 it gets about 99% of the way through the install and then reboots and then says the install is corrupt.
    I tried Ubuntu off a USB stick and it will load sometimes then just reboots after after a couple of seconds. Trying an Ubuntu install reboots after choosing the language settings.
    I think I might have to send the mobo and CPU back as it looks like one of them is borked.

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