Question about AOpen AX4SG Max Motherboard

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Ax4sg-un doesn't start

An ax4sg-un motherboard stopped working. I tried this motherboard just with a processor and memory and the boot led keeps blinking. Then I tried another processor and the boot led blinked two times and the motherboard powered off.Laz.

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Re: ax4sg-un doesn't start

Do you have any boot devices connected to it at all?

Are you using the correct memory for it?

Are you sure the ram is compatible with the mobo? Try taking all but one stick of RAM out and see if it still does it.

The long beeps tend to point to a RAM problem, or it's possible it can't "find" a hard drive4.gif.

Some motherboards support dual channel (you'll see different color slots), and some don't. If you try to put the sticks in dual channel configuration, and the cpu4.gif or the motherboard doesn't support dual channel, you may experience this.

If you have different color slots, put one stick in one color slot, and another stick in the other color, or vice versa.

The manual "should" tell you the proper configuration for this, and may even tell you what the beeps stand for.

If you can post the make / model of all the components, I can do the "dirty work" for you and see it if should all work together.

Posted on Jan 10, 2008

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Re: ax4sg-un doesn't start

You could try a different power supply, it often happens that the power supply seems fine but is actually missing one of the power source (3.3, 5 or 12VDC)
Also is your board emitting any beeps? if so it is telling you the error code, go to to see what the error is, if not make sure you have a small buzzer on your board, otherwise you will need to connect a speaker (flat connector with 4 pins long with only 2 wires going to it) directly on the motherboard in order to actually hear the beeps.

Hope this helps

Posted on Jan 10, 2008

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even something as small as an electrical extension or a faulty fan lead can cause this problem

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make sure your graphics card is securely seated with no dust in its socket

if you physically remove your graphics to check the socket card restart your computer this should activate found new hardware wizard

hope this helps

Sep 19, 2011 | AOpen AX4SG-UN Motherboard

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I have a problem with the ram, using more than 700 MB it seems it get into conflict with the USB ports, and now after a few second windows starts, all USB ports die

Seems like the ram is faulty, i havent herd of ram conflicting with usb before, as the ram memory uses hex-demimal addresses from the processor and usb is port which use irq requests. I think your best bet is invest in a new ram stick.

Jan 22, 2010 | AOpen AX4SG-UN Motherboard

1 Answer

Setup with AX4sg-UN Motherboard won't boot into win7

Have you tried booting into safe mode? If the hdd was preloaded with Windows 7, it's trying to use the old drivers to the old board. I've ran into this same problem when I tried to move a preloaded hdd to a different mobo. Do you still have your Windows 7 disc?

Dec 30, 2009 | AOpen AX4SG-UN Motherboard

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I have a AX4SG-UN system and first of all it takes a long time to come on.

How long? Some motherboards run an "extensive" P.O.S.T. (Power On Self Test) in order to confirm that the motherboard is running correctly.

Has it _always_ taken a long time, since the day that you purchased it?

Dec 27, 2009 | AOpen AX4SG-UN 865G+ICH5/800FSB/Dual...

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My motherboard have four leds in red light, d0 dled2,dled3 and don`t start up

Hi ntamayo,

Here is the description of what the four leds indicate:

d9c5d26.gifSystem Power ON-The D-LED will hang here if the processor is damaged or not installed properly.

1d08ad7.gifEarly Chipset Initialization

14ff182.gifMemory Detection Test
- Testing onboard memory size. The D-LED will hang if the memory module is damaged or not installed properly

1719312.gifDecompressing BIOS image to RAM for fast booting

1cab634.gifInitializing Keyboard Controller

3b994fe.gifTesting VGA BIOS
- This will start writing VGA sign-on message to the screen

2b36bf2.gifProcessor Initialization
- This will show information regarding the processor (like brand name, system bus, etc...)

f53faac.gifTesting RTC (Real Time Clock)

9ec1db5.gifInitializing Video Interface
- This will start detecting CPU clock, checking type of video onboard. Then, detect and initialize the video adapter

4f7c881.gifBIOS Sign On
- This will start showing information about logo, processor brand name, etc

6a25253.gifTesting Base and Extended Memory
- Testing base memory from 240K to 640K and extended memory above 1MB using various patterns

1bef2e1.gifAssign Resources to all ISA

e664b69.gifInitializing Hard Drive Controller
- This will initialize IDE drive and controller

c3b6c58.gifInitializing Floppy Drive Controller
- This will initializing Floppy Drive and controller

3afd28f.gifBoot Attempt
- This will set low stack and boot via INT 19h

24b95b0.gifOperating System Booting

When your motherboard is stuck on any of these signals, that's a clue that something is wrong with that particular device on the board. Replace it and try again.

Good Luck

And don't forget to leave a rating,



Sep 16, 2009 | MSI MB INTEL E7520|E7520 Master-S2M RTL...

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Long beeps on start-up & shows nothing

I can almost assure you that those beeps are telling you that you have burnt out your memory due to the static electricity of your body. If you are sincere give us the information we ask: (1) Manufacturer's name and Computer Name; (2) Model Name and Number; (3) The ID information of the mother board. If you can't find it we will help you! (4) We need a detailed report from you about what happened! Before the failure, during the failure, and after the failure. Send that info. and we will be in business.
My name is Constantin (arzconst is mu internal nickname with

Jun 16, 2009 | AOpen AX4SG-UN Motherboard

1 Answer


Are you sure the onboard video is working? Try an external card and see if this works. All the beeps when you remove the memory is good because you know the processor is working.Are you sure you have the right memory? Some machines won't boot or anything when you have the wrong memory.

Dec 13, 2008 | Motherboards

1 Answer

Won't go into Bios or display anything

Hi kwilson709, you sound like you know what you’re doing. Did you hear any beeps when you first started up the system?
Your must use the Intel (Northwood) CPU on the AOpen AX4SG-UN.
Make sure the 4-pin 12V. ATX Power Connector is seated & locked, same with the 20pin ATX main power connector. When you clear the cmos jumper, pg 24 in your manual. Remove the battery & check its voltage for 3 volts, if it reads anything less replace the battery.
If your graphics card is an add on & not integrated on to the motherboard, remove & blow out the slot with canned air & clean the contacts with a couple drops of alcohol on a cotton swab or to & reseat. Do the same for your memory. If the graphics card has dual VGA out puts check both for possible display. Make sure the monitor works.
(One never knows). Try one DIMM if you are running two DIMM's or more. If all of the above fail, it’s suggested that you remove the motherboard from the case & lay it on a table with a piece of cardboard under the motherboard. Hook up your power supply, graphics card (If you’re using one), memory (One DIMM & hard drive, mouse & keyboard. Once everything is connected short the two pins for power on with the tip of a pen to start up the system. Check for display. Still no display? (Only if you have one), try a lower MHz compatible CPU. Other than what’s mentioned above I'd say it’s the motherboard. (Testing the motherboard out side of the case is used to eliminate a possible case issue).

Good luck!

Aug 28, 2008 | AOpen AX4SG-UN Motherboard

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