Building a P4 system. Need help quick please...

[stingbandel]

Hi I am installing a P4 system with Soyo mobo P4i Fire Dragon and the case is Enermax. The problem that I am having is the system does not want to turn on. The only thing that works is when I hit the power button on the case, the CPU fan move for a second and that's it.


Does anybody know what's wrong with it?

I tried to use the 20 pin power connector and also already tried the 4 pin one. I also tried to put both of them with the addition of the aux one.


can somebody help me please.... thanks


Darno

 

[MrDudeMan]

make sure the PSU is switched on in the back and the voltage is not on 230, but on 115...(if you ARENT in australia, that is)

make sure the ATX power connector is pushed all the way down


and make sure the board is on the case right, maybe its shorting out somewhere...?

 

[WarCon]

Did you make sure there were no extra standoff's. (I know, I know......) Have you completely taken it apart and reassembled it? Could be your 12V on your powersupply is drooping too much to allow it to boot. With it starting for a second, sounds like its shutting itself off for some reason. In your motherboard board book, see if it has thermal/voltage/fan shutoff settings. Make sure your fan on your processor is plugged into the right header. Have you gone over the front panel plugs and made sure that they are all in correctly? Try pulling all your peripherals and cables for drives, leaving only memory, cpu, graphics card and try booting.

I know you have probably done most of this but just throwing out suggestions. Hope its not your powersupply.

 

[stingbandel]

thanks for the reply. I think I got the fan to work so I think it's ok now. What I did was I clear the CMOS. Anyway, I have another question. Which power connector should I use? Should I use the regular one or the one that has only 4 connector on it? Thanks....




Darno

 

[WarCon]

Well you need the 20pin power connector period. And you should use the 4-pin additional 12v plug if your supply has it. It gives you two more +12v and ground wires for the additional current requirements of the Pentium 4's. They run off the +12v, instead of the +5v rail.

 

[stingbandel]

ok it's not working again now What I meant by working was I saw the CPU fan was running, that's all.

what I had on the mobo was just the cpu with the fan.

I didn't have anything else.


When I got it to work, I move it back to the case and it's not working agian.


what could be the problem? thanks


Darno

 

[wfbberzerker]

psu might be bad.

 

[lastig21]

If moving it back to the case made it not boot, I would suspect you are grounding your motherboard to something. Make sure you don't have a standoff mounted in the case where it shouldn't.

 

[stingbandel]

ok, after several tries, it's back to the original problem.

when I plug in the power, the CPU fans only on for a second and then stop. that's it.


nothing else happens. I already reset the CMOS for several times. When I did it at the first time last night, the fan turned on, no beeping sound or anything just the fan. when I unplug and replug the cable, the fan stop again until I reset the CMOS back.


is it the mobo or the psu? the mobo like I said is Soyo P4I Fire Dragon and the case is Enermax 300w P4 ready.

I am using the P4 northwood 1.6 one.


thanks

 

[stingbandel]

<< If moving it back to the case made it not boot, I would suspect you are grounding your motherboard to something. Make sure you don't have a standoff mounted in the case where it shouldn't. >>



ok, I move it back off from the case, still the same thing.



so is it the psu or the mobo already broken? thanks

 

[Neurofreeze]

Your problem sounds pretty common with the Dragon, it's VERY possible it's not faulty hardware. Okay, the Dragon series has FOC, fan-off-control. It'll shut down the motherboard if it think that your CPU fan in the CPUFAN1 header is not plugged in or has stopped fuctioning. SOMETIMES, you can have a fan plug in and have it work just fine, but it'll still do this, I think it's a problem with certain models of certain brands of fans, but I don't have a list for you. You can circumvent this FOC by holding the INS key during startup. Get into the BIOS, turn off FOC.

Also, Enermax PSU's have a feature that will simply stop supplying power to the mobo if it detects a short, but it looks like you've already been down that road.

 

[stingbandel]

yes you are right.. the problem is the fan. I have to plug in the exhaust fan in order to get it to work. The CPU fan is in the CPUFAN 1 but without the exhaust fan on, it doesn't do it.

so the trick is to also use the exhaust fan. weird though but it works fine now. thanks...

I was almost gonna return the mobo.





Darno