New Motherboard wont boot

Discussion in 'PC Hardware' started by Relaxation, Jan 9, 2012.

  1. Relaxation

    Relaxation MDL Novice

    Nov 14, 2008
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    I just bought a new computer which is:

    Intel DH67BL
    Core i5-2400
    2x 2GB transcend RAM
    Inno3D GTS 250
    Huntkey HK700-52PP 700 watts PSU

    I have attached everything but it still wont boot. When I press the power button, the fan will spin for a few seconds then it'll stop and computer will go off again. No BIOS. No POST mssg.

    I havent attached the chassis fan to the motherboard because the chassis fan connector is not compatible with the motherboard rear fan header.

    Will this board boot up even if i attached the chassis fan directly to the PSU?

    Or do I need to attached it directly to the motherboard's rear fan header?
     
  2. R29k

    R29k MDL GLaDOS

    Feb 13, 2011
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    Are you using the 24 pin ATX connector and the 8-pin +12V connector for the Processor ? Seems you have a power issue, maybe the psu isn't giving the rated power, try what acrsn said but try booting without the GTS 250 video card.
     
  3. Relaxation

    Relaxation MDL Novice

    Nov 14, 2008
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    Procssor fan is attached to MoBo. Anyway I discovered something else.

    Here is a screenshot of my 700W Huntkey PSU Power. It says here +12V outputs to 18.0A.

    AFC 700.JPG

    According to DH67BL Tech Sheet, Recommended power is 20.0A. Here is screenshot:

    DH67 Power.JPG

    Do you guys think this is the cause of boot failure?

    Do I need to buy a new PSU?
     
  4. jayblok

    jayblok MDL Guru

    Dec 26, 2010
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    #4 jayblok, Jan 10, 2012
    Last edited by a moderator: Apr 20, 2017
  5. RogerI

    RogerI MDL Junior Member

    Aug 9, 2009
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    Would it be a possible short circuit scenario between the MoBo and the chassis?
    To verify, take very components out from the chassis and build your computer with insulation materiel underneath.
     
  6. janloomey

    janloomey MDL Novice

    Sep 5, 2011
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    Take everything from the tower and bench test it ,you more than likely are getting a short from one of the stand offs in the case,did you use the heat sink that came with the cpu,did you use a back plate on the mobo?Another thing I would change is the psu it is pure and utter rubbish,stick with seasonic or corsair
     
  7. R29k

    R29k MDL GLaDOS

    Feb 13, 2011
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    Actually the 12v amperage is not low, it has 72 amps on the 12v rails :eek: that is more than sufficient. The issue is whether it is actually giving that ? It's a Chinese made psu so I really don't know o_O, maybe you have a friend with a different brand psu that you can borrow to test ? I am assuming all your board connections are correct, did you try clearing the cmos ? If all fails then you might need to test if the motherboard is dead !
     
  8. janloomey

    janloomey MDL Novice

    Sep 5, 2011
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    #8 janloomey, Jan 10, 2012
    Last edited: Jan 10, 2012
    It is not uncommon for low quality/underpowered PSU's to damage other components when they fail.
    Remove all the RAM, boot and listed for any beeps from the Mobo speaker. No RAM and no beeps indicates a Mobo problem.
    If you get the proper beep codes and the Mobo appears to be free from defects you can proceed to a bench test.


    Set the motherboard on a non conductive surface. The motherboard box is perfect for this. DO NOT PLACE THE MOTHERBOARD ON THE STATIC BAG! It can actually conduct electricity!
    Install the CPU and heat sink.
    Install 1 stick of RAM.
    Install the video card and attach the power supply connection(s) to the card if your card needs it.
    Connect the monitor to the video card.
    Connect the power supply to the motherboard with both the 24pin main ATX Power connection and the separate 4 or 8 pin power connection.
    Connect power to the power supply.
    Do NOT connect ANYTHING else. Make sure you have the power connector on the CPU fan connected.
    Use a small screwdriver to momentarily short the power switch connector on the motherboard. Consult your motherboard manual to find which two pins connect to your case's power switch. Then touch both pins with a screwdriver to complete the circuit and boot the system.


    If all is well, it should power up and you should get a display. Then assemble the parts into the case and try again. If the system now fails to boot, you have a short in the case and need to recheck your motherboard standoffs.


    If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.