Question about ASUS K8V-MX Motherboard

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My computer froze up one day. The green light on the mobo stays lit all the time now. I've replaced the cpu, RAM and tried different video cards, but it still won't boot up. I even got a different ASUS mobo and the green light on *it* stays lit up!. When I got a new/different cpu, the system does at least try to start, but only runs for 2 or 3 seconds and then shuts down. The hard drive is fine (works in another system). Anyone got *any* other ideas what could be the trouble? Everything is seated properly and nothing is loose. The RAM is good (I tried it on another computer). I'm at a loss and been without a computer for almost a month now. Thanks.

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  • Master
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Hi!

Check the out put voltage of your power supply.. If possible try using a digital multi-tester. Check the standard reading on the power supply connetor, the red wire should read +5 volts while the yellow wire should read +12 volts..

If the readings is below the standard output voltage, then it means that the supply current for the motherboard and other hardware like harddrive and cd drive is not stable.. it cannot supply the required voltage to run your motherboard.

Check also if there is something that affects the current stability of the power supply...like for example check all the cooling fans, exhaust fan or blower fan that is already burnt and yet still connected to the power supply.

Hope you find the problem from this solution..


Much appreciated if you rate this solution.. thanks..

Posted on May 28, 2010

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  • ASUS Master
  • 4,806 Answers

Hi,

I think you have just about covered everything by testing the hardware out on a different system. The only vital thing that you haven't checked is the PSU (Power Supply Unit).

Get another power supply of the same type and try that in your system as faulty PSU's can cause these problems even though the motherboard is showing that power is being received, it could be showing a false positive.



Please let me know how you get on and if i can provide anymore assistance.



Regards.

Posted on May 28, 2010

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