Question about Gigabyte GA-7N400E-L Motherboard

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Ga-7N400E powerup problem

When i turn on the computer it only goes on for about 2-3seconds (fans run on cpu case and power supplie fan turn on power light on front and then shuts off.

Cheked:
Psu ok
Procesor ok
Memory ok

bat the nForce2 MCP became wery hot.

Posted by on

  • Deak Imre Feb 28, 2008

    Cheked bat the same problem

  • Deak Imre Feb 28, 2008

    Chek , no change, maybi its shorted the MCP

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  • 152 Answers

VRM Circuit problem found there
disconnect only core voltage connetor and power on motherboard
if motherboard on so confirm that your vrm circuit is sort

replace vrm circuit mosfet

Posted on Feb 25, 2008

  • Harshad Patel
    Harshad Patel Feb 28, 2008

    replace PSU {SMPS}

    if replace psu and not solve your problem so your mobo

    any bridge get down or short

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Voltage not going to cpu


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Note that the power supply is the main component that must be supplying the power. If you don't hear or see the fan turning in the power supply and the little power light on the front of the computer does not light, replace the power supply.
If your power supply is running and nothing else is running, I would unhook all devices and leave just the CPU and video and memory in. If you get nothing, then the motherboard is probably bad.

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1 Answer

Ga-m61sme-s2l motherboard always shut down within 5mins


It sounds as if the motherboard is having a temperature safety shutdown. This occurs when the temperature of the CPU exceeds a certain limit.

First off: Please check your CPU fan, power supply fan, and graphics card fan(if you have a gfx card) that they are working. If not, I would highly recommend replacing the fans or at least cleaning them and attempting to get them started by rotating them manually.

Please enter your BIOS (See Here for instructions) and navigate to "PC Health Status" - check the entry for the CPU temperature. While in the BIOS there is little strain on the system, but if the temperature is above 40 degrees Celsius in this state it may be prudent to check the fan setting. Also, check if there is a CPU Fan fail warning/CPU warning temperature - on average the limit should not exceed 60-65 degrees Celsius, max. Set any Fan speed or mode settings to maximum if able.

Try again.

If problem persists, and you are sure the temperature is not too high and/or the CPU fan is working, it may be the power supply itself. It is possible for the power supply to shut itself off in extreme cases such as when a power supply's fan stops working, and the temperature of the power supply rises to an unsafe level. Sometimes the fan will work initially but quit after a certain time. The fan requires replacement if this is the case.

Let the computer sit for a while and check to make sure it is at or near room temperature. Attempt to restart the installation process. When the power is cut, feel where the power supply meets the case to check whether or not it is particularly hot.

Replacement of the power supply's fan should solve that problem. I recommend taking it to a repair shop.

If that is not the problem, a last resort is that the harddrive is overheating and causing a system crash. With the case open, start the computer (mindful to be careful and always touch a large metal object such as the computer case itself before getting your hands near any components to prevent static damage), and wait for it to crash. Place your hand gently on the harddrive. If it is very warm or hot to the touch, most likely the harddrive's actuator arm, circitry, or data plate is malfunctioning and the drive should either be taken to be repaired or replaced.

If none of the components in your computer are particularly hot, please come back with more information on your computer, such as the parts, what you are cd you are booting, any new hardware, etc.

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1 Answer

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Use a stiff brush and vacuum cleaner on power supply fan area
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1 Answer

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