Question about ASUS M2N-MX Motherboard

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PC doesn't turn on

I have amd 5600 suddenly it's stop working. when i press power btn processor fan run for 1 or 2 seconds only but after 1 or 2 days if i try to start it will start for once and when i shutdown the pc it gives same problem. again it will start after 2 days for 1 time until i shutdown. i check smps, ram, HDD all is working. plz help me.

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  • Anonymous Oct 07, 2008

    I have the same problem. I checked the memory, video card, and powersupply with a Intel gigabyte board and everything worked fine. Its either the AMD 6400+ CPU is bad or the ASUS motherboard. Since I don't have an extra AMD CPU its going to be tough to figure out which one is faulty. I just built my computer 6 months ago and I never had any of the computers I build that went bad within 2 years. The Asus motherboard I have has a built in safety off feature if the board gets too hot. The quickest way for you to find out is to purchase a new CPU and pop it in to see if this corrects the problem. If this doesn't, it has to be the motherboard. Well I'm going ahead and purchase a new CPU and motherboard because I did wanted to upgrade my computer. FYI........its very rare that a CPU goes bad before the motherboard unless you didnt have a proper heat sink to keep the CPU from overheating.

  • daredevil103 Nov 13, 2008

    my asus m2n-mx could not start up no visual or sound ,powersupply turn on and off for a sec but board remain lighted. have change power supply with same result

  • Jason May 11, 2010

    were you grounded to the case when installing hardware? It is possible there was an ESD and part of the system has been damaged. It is also possible that the POST or BIOS is not passing a test, remove all components except your cpu is you get a steady beep its ok, then install the memory and go from there



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I guess your problems are solved, but for anyone else reading this thread, here is the fix that worked for me.... *when i pressed the power button, all fans would spin up for less than a second, and die, nothing else happened* so i tried many things and this is the only solution i found; Isolate the power supply from the case, or try just holding the power supply when running the computer. I found that if i held my power supply in my hand, and made sure there was no cnotact between it and the case, my computer worked! Hurrah. So now have cable tied my psu to the top of my case, insulated by a layer of foam. And it's working fine.

Posted on Jun 09, 2009

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You can find a lot more help- info about that in the forum of asus....!

Posted on Nov 18, 2008

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Age and dust accumulation. try blowing the case out or get a vacuum cleaner and clean out all the ports. If this doesn't work, you may have to take it to a computer repair shop to get it cleaned and serviced properly. The heat paste on the processor may have dried out and be causing an overheat.

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New build doesn't beep


http://www.newegg.com/Product/Product.aspx?Item=N82E16813135315

A) Power Supply checks out?
You have tested the three main voltage power rails?
3.3 Volts
5 Volts
12 Volts?

What were the voltages?

Post back in a Comment.

1) If ALL the LED lights were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power

3) A typical Processor (CPU) uses 51 to 125 Watts of power.
Just depends on what Processor it is.

AMD Sempron 100 series? 45 Watts
AMD Athlon II? Could be up to 95 Watts
AMD Phenom II? Could be up to 125 Watts.

Point?
Don't assume because you see LED's light up, and fans spin; that your Power Supply is good.

A Power Supply with a weak voltage power rail, will not have enough power to turn the Processor on.

B) The motherboard mounts to a Support Plate.
The Support Plate can be a separate metal plate, or an integral part of the computer case's metal frame.

Mounting of the motherboard to Support Plate, is accomplished with either plastic Spacers; or metal Standoff's.

If using metal Standoff's, make SURE all Standoff's are matched to a motherboard mounting hole.

IF, a Standoff is NOT matched to a motherboard mounting hole, there is a good chance it can touch the exposed solder joints; on the bottom of the motherboard.

Result? Short Circuit of motherboard.
MOST, of the time the 'offending' Standoff can be removed; or relocated, and the motherboard is OK.

C) All power cables from the Power Supply to motherboard, plugged in, and plugged in tightly?

New motherboard, and the connectors will be TIGHT, usually; when plugging things into it.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

D) Disconnect everything except Processor, processor fan power, and Ram Memory.

Means unplug Harddrive power cable, and data cable.
Optical drive power cable and data cable
Card Reader cables, IF used.
USB Front Panel cables.
Computer case fans.

BARE minimum.
Turn the power supply on. (Press the Power on button)
You are at this point, just trying to see if you can get the BIOS Setup screen to come up.

(Press - enter BIOS Setup key)

BIOS Setup screen comes up, go on.
BIOS Setup screen does not come up, there is a problem with the motherboard.

BIOS Setup screen comes up, don't tarry around.
Turn the computer off.
(Press the Power On button in for a count of 10 seconds, or until computer turns off)

Computer case fans not plugged in, you don't want to overheat the motherboard chipset. (Especially the Northbridge chip)

Then add harddrive, and hook up computer case fans.
Everything looks good so far, then plug Card Reader in.
Yes?
Then plug Front Panel USB cables in.
(The front of your computer is the Front Panel)

Had a person the other day find out it was his USB cables/USb ports; that were the problem.

E) By the way............
There are Solid Capacitors surrounding the Processor, and as you can see; other areas on the motherboard also.

However there are Electrolytic Capacitors on the motherboard too.

See them by the Northbridge chip, (Aluminum Heatsink is on it), and around the expansion slots? (PCI and PCI Express x1, and x16)
Around bottom of motherboard also?

The ones around the expansion slots I'm not that concerned about, as much as the ones around the Northbridge chip.

My belief is that the ones around the expansion slots, are used as Filters.

However the ones around the Northbridge chip, (And solids around the Processor), are used for Voltage Regulators.

http://www.hardwaresecrets.com/article/616

Point?

http://capacitorlab.com/visible-failures/index.htm

http://www.youtube.com/watch?v=Lut7MX5Dd_A

Know what really bites?

Electrolytic Capacitors have Electrolytic Paste inside.
This is a chemical, and works with a chemical reaction.
It breaks down over time, also.

Can also just dry up inside, and show no outward visual signs of capacitor failure.

Plus,............how can I state this tactfully?
ECS motherboards are not known to be the 'cream of the crop', if you know what I mean.


For additional questions please post in a Comment.

Regards,
joecoolvette

http://www.youtube.com/watch?v=2rqd8Oa-sA4

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If you have cleaned out the dust with compressed air, then I suggest you look at the processor cooling. Is the fan running up to speed? Is the heat sink tightly in place on the processor? Feel the fins of the processor heat sink when you power it up and if they get hot your processor is most likely over heating and shutting down. If all is well at the processor, check the power supply fan to see if it is running and the only other suggestion is to try another power supply. Dust is your worst enemy in a computer.

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The controller will not turn on. Green light on back comes on but when we turn on the unit, the fan starts briefly and then the power cuts off.


Bad Power Supply. Weak Voltage power rail.

Not enough power to turn the Processor on, and keep it on.

1) ALL those LED lights together, use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts

3) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is. (Older Processors use less Wattage)

The Compaq Presario SR1810NX desktop computer, comes with an AMD Sempron 3200+, processor.

(Uses the Socket 939 processor socket)

[Maximum operating capability is a 1.8GigaHertz frequency rate.
1.8GHz

Giga = Approximately 1 Billion
Hertz stands for Cycles per Second.
Frequency Rate is correct computer speak for 'Speed'
The AMD Sempron 3200+ processor, can operate at a maximum frequency rate of 1.8 Billion Cycles per Second ]

HP Support >Compaq Presario SR1810NX desktop computer > Product Information > Product Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00609384&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=1841795&lang=en

The AMD Sempron 3200+, can use up to 62 Watts,

http://en.wikipedia.org/wiki/List_of_AMD_Sempron_microprocessors#.22Palermo.22_.28Socket_939.2C_E3_.26_E6.2C_90_nm.29

(Palermo Core)

When you press the plastic Power On button, you are contacting a Power On switch inside it.
(Typical ATX Power On switch,

http://www.directron.com/atxswitch.html )

When an ATX power supply is plugged into power, there is a 5 Volt Standby power, present inside the power supply.

Pressing the momentary contact power on switch, closes a circuit that directs the 5 Volt Standby power to 'excite' the power supply, and turn it on.

The first chip to receive power is the BIOS chip.
[Chip and Chipset are slang terms for I.C.
Integrated Circuit.
BIOS stands for Basic Input/Output System]

BIOS,

http://en.wikipedia.org/wiki/BIOS ]

BIOS looks to see what devices are installed, does a Ram Memory count, TURNS the Processor on, and hands the computer over to the Operating System.
(Windows XP is one example of an O/S. Operating System)

The LED lights receive power, so do the fans, and the Harddrive. When it's time for the Processor to kick on, there isn't enough power, and the Power Supply 'falls to it's knees'.

Replace the Power Supply.
It's just one of the basic ATX power supply's that are readily available in a multitude of places.
The Wattage is 300 Watts.

The ATX form factor for this power supply, (Size and shape), is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall.

Power cables needed:
(Continued in a Comment)

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DEAR,

AS PER YOUR PROBLEM I THINK YOUR COMPUTER WORKING WITHOUT ELECTRIC EARTHING. PL FIRST COMPLETE EARTHING WITH ELECTRICIAN.

YOUR EARTHING IS NOT PROPERLY PL CHECK THAT:-- ELECTRIC SHOK ON PC BODY.

YOUR PROBLEM WITH POWER SUPPLY OR PROCESSOR,MOTHERBOARD.

PL FIRST CHECK POWER SUPPLY,SECOND CHECK YOUR PROCESSOR WITH ANOTHER PC MOTHERBOARD.





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http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182,00.html

make sure you download the model series you have in your computer

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Could be a processor failure, but try changing the cmos battery first on the mobo and locate 'JBAT1' terminal on mobo and put jumper across pins 2-3 then back to pins 1-2 and try starting up again.

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