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Thread: Death of a motherboard?




  1. #1
    Join Date
    Feb 2010
    Location
    Montreal
    Posts
    33

    Default Death of a motherboard?

    Hi,

    I am hoping to get some insight from someone who would have had a similar experience.

    The situation is the following:
    We have a computer that has been working for quite a while. Low power i3 3GHz, nothing fancy. One day it never came back from sleep, the motherboard seemed dead.

    Thinking of a power glitch, I changed the motherboard, the power supply (Corsair 430W) and the power bar (APC). The motherboard is a Gigabyte H61-USB3 mini ITX; no card is inserted in the PCIe slot; video comes from the i3.

    The computer died again about 4 hours after the switch. If power is applied to the board, LEDs are not turning on (well, slight single blink when power is applied showing the PSU is doing its job) but nothing else.

    I am trying to figure out how this could be possible. USB ports are full (except 3.0 ports) but that is it.

    Could a power surge do this? Go through power bar and PSU to hit the motherboard this hard? The scanner (old HP SCSI scanner) is still alive and well and is plugged to the very same outlet.

    Could it be the CPU? (only thing left to change)

    tcn
    X48-ds5; Q9550S, 440MHz FSB, 3.733GHz; NH12CP-SE14; Mushkin 996599 (5-5-5-12, pc2-8500),
    Sapphire HD-5770 Vapor-X, EVGA NVidia 9800GT; Cooler Master HAF932;
    Corsair TX750

  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: Death of a motherboard?

    Remove the motherboard from the computer case and place the board on a cardboard box beside the case.
    Remove all hardware that isn't required for booting into the bios using:
    • cpu and heatsink with fan
    • case speaker connected to the motherboard
    • 1 memory module
    • keyboard (PS/2 model if possible)
    • graphics card connected to a monitor

    If you can boot repeatedly into the bios after powering off, add one component at a time and boot back into the bios.
    This should help find which components are causing the problem.

    A cpu failure is possible but they seldom fail.
    You might need to test with another power supply, graphics card, or other hardware.
    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
    .


  3. #3
    Join Date
    Feb 2010
    Location
    Montreal
    Posts
    33

    Default Re: Death of a motherboard?

    I'm sorry but I'm far beyond this point. As I said, LEDs are faintly lighting once (on for a fraction of a second and then off like a switch you turn on and turn off right away) saying that power is going to the motherboard.

    It won't post and the motherboard has CPU, memory on it (H61 using i3's video processor). It is already bare.

    I'm looking for the root cause; the mobo is dead.
    X48-ds5; Q9550S, 440MHz FSB, 3.733GHz; NH12CP-SE14; Mushkin 996599 (5-5-5-12, pc2-8500),
    Sapphire HD-5770 Vapor-X, EVGA NVidia 9800GT; Cooler Master HAF932;
    Corsair TX750

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