Question about Intel Motherboard

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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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Posted on Jan 02, 2017

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1 Answer

Asus p5nd motherboard won't start when power button is pushed, but the motherboard light stays on..


Most probably your power supply. An SLI rig will draw a lot of power for the graphics and for a power supply in a system like this to have lasted 5 years is amazing. They don't last forever. You could buy a PSU tester (about 10 GBP) and confirm it. But if you have to buy a new one look for one that is at least 25percent more powerful than your old one and has at least a bronze efficiency rating. (silver would be better) and buy one from a known brand such as Antec, Chillmaster, or OCZ.

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Things to try:

1. Check that the cpu fan is properly connected to the correct port marked CPU FAN.

2. Make sure the power cables are connected correctly to the motherboard.

3. Test the button switch with a multi-tester to make sure that it tests good.

4. Make sure the power switch is connected to the correct pins on the motherboard.

5. With the computer off pop the cr2032 battery out and pop it back in after a few minutes.

6. Test the power supply with either another motherboard or a power supply tester.

7. Test the motherboard with another power supply.

8. If all else fails replace the motherboard I have had a bad one from time to time even out of the box, and if you have a spare cpu you may want to test with that also. Cpu's hardly ever go bad I think I have had two go bad ever, not counting power surges and storm damage.

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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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2 Answers

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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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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Pluging in extra usb ports/Mic and headphone jacks from the tower


Answer me this. You're case is an Antec tower? The motherboard is the Asus P4P800 SE ? Is this correct?
If you have you're manual you can see what goes where on the board for front panel connector page. 2-31. (This diagram shows you how to connect the front mic & speaker).
To connect the Antec's front USB ports plug the case USB front connectors onto USB56 & USB78 shown on page. 2-30. Most case wires are already set within their USB connectors & the Antec's front USB connector should fit right on the mother board's pin's. If you need you're user manual, download from Asus by clicking on this link. http://support.asus.com/download/download.aspx?modelname=P4P800%20SE&SLanguage=en-us

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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