Question about EliteGroup KM400-M2 Motherboard

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Short burst of power

I Hit THE power button,fans operate for about 2 seconds then nothing,power supply is good,switch is good,any help is greatly appreciated.This came on suddenly by the way.

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  • bigsmitty64 Jul 31, 2009

    ecs km400-m2 mobo and only one hard drive.no cards at all. I know the p.s. is good, I switched it out from a working p.c.
    Thanks for any help in advance.
    Smitty

  • bigsmitty64 Jul 31, 2009

    I unplugged everything from the mobo. All that is hooked up is power and power button,EVERYTHING else is unplugged.Even memory.....and same problem... aaaggh!

  • bigsmitty64 Jul 31, 2009

    Don't have access to a dvm but I unplugged everything including memory.The only things hooked up are the power supply and the power button.No help, same problem.

  • mtbakercs
    mtbakercs May 11, 2010

    Hello, what motherboard do you have? other hardware installed?

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  • 256 Answers

Most likely you have a bad power supply, or a short or overload that causes the power supply to shut down. You will need a DVM (digital volt-ohm-meter). Using the DVM and the instructions on the PS, unplug all PCI boards and all wires on the HD's. There should be a point where the PS will not shut down. Then you will have to install all the connections one by one, until the PS shuts down. You will have to turn off the computer for each of the connects and each of the re-connects or you are exposing your computer to a great danger. CONSTANTIN (arzconst)

Posted on Jul 31, 2009

  • CONSTANTIN SPYROU Jul 31, 2009

    I am really sorry that you have to go through all these troubles. It appears to me that it is an overload that shuts down the PS. You just have not come to the point of isolating it. Please check and tell me if the power socket to the mother board (a big connector) is disconnected? How is the PS behaving with the fans off (unplugged) and the MB disconnected. Why did you have to disconnect the PS from an older computer and install it on the present one? I hope that you did not throw it out, because it is going to be the one you will use at the end. Have you checked the capacity of the PS you installed now? Check how much of a load it will take before it shuts down. Never disconnect the fan for the CPU, please... Did the computer from where it came have those fans, I mean the old computer... We are on the brink of finding the problem. Please remember that you are not to hook or unhook something with the computer powered up. You need to turn off and then on, to avoid more damage... I am sorry that it is a long and tedious process. I will expect your answer. Thank you very much. CONSTANTIN (arzconst)

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The point the status led is off means that the 5V part of the power supply is broken. 12V part is (probably) OK because you have a fan running for short, but it is not important because all power sources of the power supply should work.

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Pover up trouble


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got backup for your Dell?

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it could be your power switch, veriy that it isnt the power supply by

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3.) you should see green wire and next to it a black one
4.) using a paper clip bridge the too wires
5.) if it works proceed to net step if not get a new power supply

to check case switch and board switch

1.) plug in power supply to main board
2.) look at the pins where the power button connects to
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if the board should start up>
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