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New motherboard only green light on motherboard turns on nothing

Receantly bought a new motherboard and case (asus m3n72-d antec 900) and nothing is turning on when i turn on psu except for a green light on motherboard so im pretty sure psu isnt dead and i have the firmwire as well as the frontiside connectors in the right spots according to the manual that came with the motherboard but still no luck what do you guys think?

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  • Anonymous Mar 07, 2009

    I believe that the green light on the motherboard is lit by the 5v standby power from the power supply.
    No other voltages will be present from the power supply until the power on switch is pressed which will then allow the power supply to generate the other voltages needed in order for the motherboard to function.
    It appears that for some reason the motherboard is not recognizing
    the action of the power on button.
    I am still investigating the matter
    Vince

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There are things you need to check upon assembly;

do you have the right power supply for your CPU?
did you properly inserted you RAM?
did your power supply properly connected to your mainboard (all of its power sockets?)

one of these is not right won't turn your CPU on.

green light indicates that power is flowing in your mainboard but doesn't mean that its working.

Posted on Mar 06, 2009

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Check your power connector, wire that runs from the case to the motherboard. let me know how you went with that cheers

Posted on Mar 06, 2009

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Asus motherboard antec power supply when plugged in nothing happens motherboard standby light flashes.


when it flashing that means something it not connect to it right for it to turn on go over check it out

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ASUS P5QC refuses to boot


This is a known issue with Asus motherboards. I got 2 in my shop with the same problem. While I didn't have your model I'll assume the issue is on that board as well.

Clear cmos with the jumper on the motherboard. This resolves the issue with no video. 
There should be a 2 pin jumper, your motherboard manual will show you where its located.

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Computer will not boot up.


I have built several gamming computers, one with Asus and had good luck. What I do have is a power supply checker that I got from Tiger Direct that I use alot. To me a 450 watt PS sounds a little small . Sounds like it cant regulate the voltage, expecially the 5 volts. I have a master power supply (650 watts) that will hook up to any board or hard drive. I try it when I have this kind of problem. The only thing I dont like about Asus is that they have so many pins, so I would double check the pin settings.
Did the power supply come with the case.. If it did, change it. I have never had any luck with those. I really think they use 2nd hand ones for kits. Just my opinion GOOD LUCK

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New asus m3n72-d motherboard bios will not post


If you don't already have a case speaker hooked up to the board, you might want to connect one since there isn't an on board speaker and you will not hear error beeps otherwise.

Also, if you have another non-phenom AM2 processor handy you should really update the BIOS to latest release. Many late model Phenoms will not work on motherboards that have earlier BIOS releases and you will not be able to post. You should then choose "Set Optimized Defaults" and save the bios without any changes then shut down (not reset). When you power on again it should post and you should be able to get into the BIOS.

A third thing you can try (after you get a case speaker hooked up) is using a cheap pair of ddr2-6400 RAM to get the board to post so you can get into BIOS and change the voltage to the correct settings for your RAM if it requires a higher voltage than the bios expects.

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2 Answers

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Are you sure that the memory you have installed is compatible with your motherboard.

It is weired but some memory do not work with certain motherboards, irespective of speed or voltage rating.

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1 Answer

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Answer me this. You're case is an Antec tower? The motherboard is the Asus P4P800 SE ? Is this correct?
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Good Luck!
Mike

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1 Answer

Shut down...


i am not getting into ur point what u want actually?

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