New (?) problem with A8N-SLI

[Spamela]

i just bought an A8N-SLI & the thing won't even come
close to booting up. i did a search & didn't find anything.

i have an Antec 550 watt PS (i use a 20-24 pin converter)

here's what happens:

(configuration: main PS is connected, 12v 4 pin connector is connected,
CPU & memory installed, speakers connected)

i turn on PS: powersupply fan, cpu fan, and chipset fan all start & run for about 1 second,
then turn off. motherboard LED is green. speakers don't say a word.

tried booting w/o cpu (only cpu fan), no memory, resetting CMOS - same result.
tried different power supply (350 watts), but no go.

the power supply works ok with a different (older) motherboard.
i don't have another MB to test CPU & memory.

suggestions?

 

[Insomniak]

Make sure your system memory is properly seated. This sounds like RAM that's halfway in the DIMM.

 

[FastEddie]

Sounds like you covered everything. You of course changed the selector card to single mode? The manual states it ships in single mode but everyones been getting them set up in dual mode. What video card are you using?

 

[Spamela]

Originally posted by: Insomniak
Make sure your system memory is properly seated. This sounds like RAM that's halfway in the DIMM.

thanks. i did remove the RAM, hoping to hear some
beeps or a voice warning over the speakers, but nothing changed.

 

[Spamela]

Originally posted by: FastEddie
Sounds like you covered everything. You of course changed the selector card to single mode? The manual states it ships in single mode but everyones been getting them set up in dual mode. What video card are you using?

i did ensure it was setup in single-card mode.
the video card is the Leadtek Winfast PX6600GT TDH Extreme,
but its presence or absence didn't change anything.

 

[FastEddie]

Not sure if the POST reporter is enabled by default. I know that the Report System Booting is Disabled by default. So it's not unusual that you aren't hearing any POST errors. When you installed the motherboard, you checked the obvious to make sure there wern't any extra standoffs in the case? Didn't get one of the I/O Shields grounding tabs stuck into the USB header on the back of the board? Outside of a direct board short, the board should POST.

 

[Thorsson]

Sounds like a short on the motherboard. Try taking it out of the case.

 

[Spamela]

Originally posted by: FastEddie
Not sure if the POST reporter is enabled by default. I know that the Report System Booting is Disabled by default. So it's not unusual that you aren't hearing any POST errors. When you installed the motherboard, you checked the obvious to make sure there wern't any extra standoffs in the case? Didn't get one of the I/O Shields grounding tabs stuck into the USB header on the back of the board? Outside of a direct board short, the board should POST.

Sounds like a short on the motherboard. Try taking it out of the case.

great suggestions, will try.

 

[Spamela]

Originally posted by: Spamela

Originally posted by: FastEddie
Not sure if the POST reporter is enabled by default. I know that the Report System Booting is Disabled by default. So it's not unusual that you aren't hearing any POST errors. When you installed the motherboard, you checked the obvious to make sure there wern't any extra standoffs in the case? Didn't get one of the I/O Shields grounding tabs stuck into the USB header on the back of the board? Outside of a direct board short, the board should POST.

Sounds like a short on the motherboard. Try taking it out of the case.

great suggestions, will try.

ok, i tried powering up the MB while it was sitting outside case
(insulated from everything) & got the same results:brokenheart:

more suggestions?

 

[bellang]

Hello, just joined up after purchasing the bits to a new PC. Having exactly the same problem here (though dont get as far as the CPU fan starting, just chipset fan and PSU fan).

2nd board as well, exactly the same problem on the first one.

Did you manage to make any in roads on resolving it? I thought by buying a larger PSU (Tagan or Antec) it would resolve the issue, however you appear to already have a good enough PSU so I'm now worried....!

 

[FastEddie]

Some people are reporting that their boards won't fire up unless you have both the 12v AUX connector pluged in and the four pin molex (EZ Connector) next to the sli selector. I know the board won't fire without the square 12v AUX connector plugged in by the cpu, (current to the processor), but some need both connectors plugged in to get the boards fired up.

 

[Spamela]

Originally posted by: FastEddie
Some people are reporting that their boards won't fire up unless you have both the 12v AUX connector pluged in and the four pin molex (EZ Connector) next to the sli selector. I know the board won't fire without the square 12v AUX connector plugged in by the cpu, (current to the processor), but some need both connectors plugged in to get the boards fired up.

that was one of my first desperation moves;
it didn't help, but thanks for still throwing out ideas.

 

[bellang]

Thanks for the advice. Tried this on both boards as well, but to no avail.

 

[FastEddie]

Not done yet. Both of you guys use one stick of memory in slot B1. Do a hard clearing of the cmos again and see if the boards will fire up.

 

[bellang]

Any help appreciated!

Just tried, B1 stick only and battery out and jumper moved to clear CMOS. Same thing again.

 

[FastEddie]

Originally posted by: bellang
Any help appreciated!

Just tried, B1 stick only and battery out and jumper moved to clear CMOS. Same thing again.

What power supply are you using? Give me the amp readings for the 12v rail that's found on the sticker attached to the psu.

 

[kindest]

another unhappy a8n-sli user.

very happy i didnt buy one and at the same time mad that people like you and many others are having problems. asus was supposed to be mean stablity and quality.

 

[Spamela]

Originally posted by: FastEddie
Not done yet. Both of you guys use one stick of memory in slot B1. Do a hard clearing of the cmos again and see if the boards will fire up.

i like your pitbull-like refusal to quit, FastEddie.

i need to accumulate a few more suggestions, since i'm trying
to upgrade my only PC & it's a major PITA to shutdown,
move it where i have space & light to work, re-setup, etc.

 

[dansonic]

Make sure you install your CPU FAN and heatsink correctly... sound like overheat and shutdown within few secs.

 

[bob661]

Have tried plugging the PS into the motherboard without the 20/24 pin adapter?

 

[McGeyser]

I had the same problem. The memory is not recognized and therefore wouldn't boot. You could pull everything in the system out and still get no response. If you pull the CPU, the speech reporter drones over and over No CPU, NO CPU. I sent this board back to Newegg and they gave me a new one. It works now but with a different set of problems I will make a seperate post for. I don't know what to think about Asus now.

 

[bellang]

How about this. Bought a new power supply, Tagan 480w (28a through 12V) so should be quite sufficient!!!

Anyway, plugged in, switched on, same thing again. Though, reset CMOS and try again.

Tried again..... Motherboard, near to where Cha fan connector plugs in has a resistor there, this caught fire, followed by the board near the SATA ports, then next to the IDE ports.....!!!!!!!!!!!!!!!!!!!!

Pulled plug and eventually managed to blow it out. Not sure what state my processor and memory are going to be in now.....

Going back to the problem. What could cause this???? I cant see two power supplies being at fault. Surely a board wouldnt catch fire if it was faulty?????

Any help greatly greatly greatly (!) appreciated!!!!

 

[Tripp17]

OH MY GOD!!! Im glad you are ok, and you saw this problem before youre house went up in flames. Man. I too had a board that wouldnt post no matter what i did, so i returned it and my new board works fine. It seems to me that if you want this board to work, you cant have NCQ drives, and you also need to flash to a later version like 1003.5 in order to overclock. Other than that all is good. Your problem sounds like a crappy board not the psu, but, what type of psu caused this?

 

[bellang]

Tried the motherboard with an AKASA and also the TAGAN. Tagan seems to be a very good power supply. I think when the motherboard was having problems with the akasa it didnt have the current (rail) to keep going so it shut down (even though other people have it working with this board). The tagan, which has a much higher current if required, didnt fail me. Unfortunately the motherboard did!

I'm starting to get paranoid though. Two ASUS SLI motherboards, both with the same issue (only one catching fire though). It could be me.... Or a dodgy switch on the case??? or a dodgy fan???? Help!!!!

 

[Spamela]

for those of you who are having a problem similar to mine,
here's the response from ASUS to my problem report.

Sir , Please make sure your 4 pin ( ATX 12 V) power connector installed . And you 'd better install 4 pin EZ-PLUG on the motherboard .


If not , please take your motherboard and others parts out off the chassis,put motherboard onto a flat desktop,connect everything needed to boot with,then try to power on system (remove all external device including system harddisk ),will the system powered on and boot up ?

If not ,Please reset CMOS defualt by clearing CMOS:

1. Cut the power supply for the whole system and open your chassis;
2. Take out the CMOS battery from the battery socket;
3. Install your battery with "reverse side" that means turn the battery 180 degree and put in into battery socket;
4. Hold about 30 seconds, then take out the battery and install it normally;
5.! Plug the power cord and Power on .

If still fails , please take all your ram sticks out from motherboard , and power on.Will it give you long-long-long repeat beep warning?
If so , please clean your ram connectors with alcohol or with a clean rubber then install your ram sticks back, you can first install 1 stick of ram into DIMM B1 slot .
If the system can boot with 1 ram stick , add another.

And please check your SLI connector mode . When you install single video card , please install it to single mode . But if you have 2 video card , please install it dual mode .
If still not and if it is possible, please change other pci express video card and bit PSU to test .


After above steps if the system does not boot , i think maybe your motherboard or your CPU is faulty , you need take a future test for each one and make sure on earth which part cause system won't boot. !

If it is due to motherboard damaged , p lease contact your dealer for RMA service .