AsRock Duel 939 Mobo

cyberfuzz

Senior member
Nov 1, 2004
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well i just got my x800gto2 and my asrock duel 939 mobo...i get it all hooked up, proc, hd, ram...flick on power, my case fans/cpu fan come on for a second then immediatly shut off. well i thought well maybe psu died, so i hooked the psu up to another computer, no problem, booted up fine. thought maybe i might ahve fried something in the transfer over, nope, all being used now on my old mobo/gpu. only thing thats new is the mobo and video card. i tried unplugging the video card and it still wouldnt boot up. only thing i didnt try is putting my 9800 in the new mobo but i hav everything moved over now to my old mobo again and that would be a pain. Do i have a DOA mobo or whats the deal. i would think that my 430 antec trupower would handle the x800gto2 (not even overclocked yet :\), but im not sure. ayone w/ this mobo care to share their insight? i have everyting hooked up correctly, double tripple checked. flick power..1 second dead. do i have to adjust anything so it knows pcie/agp, is it a possible overheating of somesort, what is the problem! i dont want to have to wait 3 weeks to get a replacement mobo.
 

o1die

Diamond Member
Jul 8, 2001
4,785
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Have you tried a minimal boot up outside the case? At the very least, reseat everything, including the ram, cpu and video card. Sometimes alignments are a little off, especially with the video card; that's why I suggest boot up outside the case.
 

Zap

Elite Member
Oct 13, 1999
22,377
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Originally posted by: cyberfuzz
i would think that my 430 antec trupower would handle the x800gto2
That's an original TruePower and not a TruePower 2?

#1 the Antec doesn't have the 24 pin ATX plug (some boards are picky this way)

#2 the Antec doesn't have the 6 pin PCIe plug for your GTO² video card

Conclusion: You need a new power supply, specifically one that has the above listed plugs.
 

snoopy007

Junior Member
Oct 7, 2005
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well according to someone who wrote on toms forum

"I recently bought the ASROCK 939DUAL SATAII together with a new ANTEC case with a smartpower power supply.
This combo won't boot. When I use any other PS that I have the board boots. Also the smartpower is working fine in 2 other systems. Now I found out that the Antec has no -5V pin in the ATX connector (my other to PSU's do have -5V). According to the ATX spec as of version 1.3 the -5V is obsolute so the PS is according to spec. The documentation of the board just mentions ATX and no version. As it is a SATA board which doesn't have any ISA slots one would think it should comply to ATX 1.3

Anyway I am not the only one with this problem it defenately seems to be the combo that doesn't work and I really suspect it has to do with the -5V."

- do u have have access to another psu to see if that is true?
 

Zap

Elite Member
Oct 13, 1999
22,377
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Originally posted by: snoopy007
ASROCK 939DUAL SATAII together with... a smartpower power supply. This combo won't boot.
Perhaps it doesn't like not having 24 pin ATX power.

Originally posted by: snoopy007
According to the ATX spec as of version 1.3 the -5V is obsolute so the PS is according to spec.
Ya know, the newest Fortron FSP400-GLN power supply I got completely does not have the wire for -5v (assuming that's the one it is missing). I doubt that ASRock would make a board not compatible with power supplies from various major manufacturers (indeed Fortron OEMs for other companies).

In these cases I'd say that the board needs a PSU that has the 24 pin ATX motherboard plug, plus the 6 pin PCIe for those with higher end graphics like the GTO².
 

cyberfuzz

Senior member
Nov 1, 2004
427
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the board only has 20 pins on it for power. 2 rows of 10. are the extra 4 pins elsewhere? i picked up a antec true 2.0 from staples, that should work correct? im at work now so i cant test it for another 6 hours.
 

Boogak

Diamond Member
Feb 2, 2000
3,302
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This mobo has a 20 pin ATX connector and a separate 4 pin 12v connector. You can see it in this pic, it's below and to the right of the 20 pin connector nestled between some capacitators around the edge of the board.
 

Zap

Elite Member
Oct 13, 1999
22,377
7
81
Originally posted by: cyberfuzz
the board only has 20 pins on it for power. 2 rows of 10. are the extra 4 pins elsewhere? i picked up a antec true 2.0 from staples, that should work correct? im at work now so i cant test it for another 6 hours.

Yes, should work. Keep us updated.
 

snoopy007

Junior Member
Oct 7, 2005
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no idea about the antec. I've built a system using this board using a coolmaster RS430.

I just plug the 24 pin plug directly into the 20 pin plug of the board but leaving 4 of the pins out that was all.

well, at least u can try 1 stick of ram to see if it makes any diference.

 

x2plasma

Member
Sep 30, 2005
27
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I am using an Antec True Power 2 450 watt with this board and it works just fine. The TP2 series has a 24 pin conector, but you can easily snap off 4 of the pins (built this way) to make it a 20 pin connection.
 

cyberfuzz

Senior member
Nov 1, 2004
427
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i had the extra 4 hooked up (the one shown in the pic). its a 4 prong yellow/black cable(s) that i plugged in. I had those plugged in initially. i dont know what else to try. i guess ill try the new psu and if that doesnt work then im gunna call e-wiz and try to have them send me a new one. i waited almost a week for this one to arrive, hopefully they will send me a new one fast :\
 

cyberfuzz

Senior member
Nov 1, 2004
427
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alright i tried it. it did not work, also tried hooking up my 9800pro and it still did not boot (thought maybe i busted the video card when i took off heatsink to put as5 on it. mobo is indeed DOA. ****** :|
 

Killrose

Diamond Member
Oct 26, 1999
6,230
8
81
Set it up outside of the case with only required perifrials attached. There might be a case stand-off that is not in the same pattern of your old set-up and shorting out.
 

DeMeo

Senior member
Oct 23, 2003
781
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Any resolution on this?

I just put a system together and it won;t boot either.
I have the Antec Sonata case with the 450w true power 2. (using asrock 939 dual)
The PS has the 24 pin, so I separated the 4 off of it and connected the 20 pin to the MB per asrock instructions, and the 4 pin black/yellow 12v connecter to the MB - (manual makes a point that the MB won't boot without this).

I put in the memory, sata HD, sound card and PCI-E video, DVD/CD writer.

When I flick the power supply switch on, I see lights on my keyboard flash for a second (which seems a little odd).

But when i press the power on switch on the case, nothing happens. No fans - nothing. I pulled out and reseated all of the case connections including the power and reset ones. Still nothing.


I don't know if it's the PS or the motherboard. WTF?
 

jmaker

Junior Member
Jun 21, 2004
17
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Yeah man, same thing happened to me. I couldn't figure it out so I just sent it back for a refund today, and I'll buy another 939 mobo that isn't crap.
 

raanemaan

Golden Member
Feb 14, 2004
1,774
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I had some issues with my Asrock 939 dual board and I thought I had it fiqured out finally. Came home one day mb was dead. :( Don't know what is wrong. Trying to get a RMA number.
 

DeMeo

Senior member
Oct 23, 2003
781
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Update:

It turned out to be a bad power supply. Brand new Antec case/PS.

I exchanged the case/PS and the new one works fine. Everything's working now.

FYI - for anyone who has a similar problem and need to check the power supply. Note: this is a last ditch effort to test the power supply. With an ATX ps, you can short out pins 14&15, then plug in and turn on the power supply. Be ready to quickly pull the plug, or you may cause damage. This is should at least trigger the pwoer supply and start the fan. When i did this I got absolutely nothing.