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Possible DOA?

post #1 of 13
Thread Starter 
Okay so my sig-build has been on standby for a couple of months now since I've been very busy (applying to college, wish me luck!), but I finally got around to confirming if the motherboard was DOA or not. I took everything out--CPU, GPU, soundcard, RAM--and unplugged everything except the front panel power switch and the PSU connector (24 pin is it?). I had the same problem as before.

The problem I've been having is the motherboard turns on for a split-second, all the lights go on and everything, but then it immediately powers off. I have to physically unplug and replug the PSU to reproduce the error. I tried the motherboard on a cardboard box to confirm it wasn't being short-circuited (as suggested both by Biostar support and a prior OCN thread a few months ago), and I've confirmed it's not a memory issue or GPU or anything just now.

TL;DNR: So now my question is, should I take the leap of faith and buy a new motherboard? (+warranty this one and sell off the replacement--don't want to wait another month to have a decent computer) What if what I'm having is a PSU issue? There have been several other people on Newegg who've had DOA mobos from Biostar, so I'm dubious it's a PSU problem, but I'm still unsure. This is my first build so I don't have much experience, any suggestions would be appreciated greatly.
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post #2 of 13
Just checking , but did you plug in the 4 or 8 pin connector as well as the 24 pin ?
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post #3 of 13
Thread Starter 
Ooh, not the first time. Just tried it again with it though, same result.
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post #4 of 13
Thread Starter 
Eh, just bought a new mobo from 'egg. If that's not the issue then I'll cross that mountain when I get there...
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post #5 of 13
You could try resetting the cmos.
Unplug the 4/8 pin and 24 pin connectors, take the cmos battery out, (wait a minute or so)
Reset your cmos by either shorting the cmos pins, for a few seconds is noemaly enough ( check your MB diagram in your manual or manufacturers site to see which pins to short , important ), or if your MB has it , the cmos reset button.
Reinsert battery, plug it all back in and try again. Failing that if you can try another PSU to rule that out , even better.
Good luck
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post #6 of 13
1) clear cmos
2) check to make sure your psu isn't faulty
3) make sure there is nothing shorting the MB
post #7 of 13
Thread Starter 
Yeah I've reset CMOS before and I'm 100% sure it's not a shorting issue (risers checked dozens of times, even tried it suspended in air holding it by the cables).

PSU is the only thing I could think of but I don't know how to test that..?
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post #8 of 13
And there was me treating you like a cmos newb

You can take your PSU down to any descent PC shop and get them to test it. It should only cost you a few bucks , some will even do it free.
Edited by mr soft - 11/12/10 at 2:14pm
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El Niño
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SoulStorm Brew
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420w Tacens radix IV  Silverstone grandia Loves to be touched  
CPUMotherboardGraphicsRAM
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Hard DriveCoolingOSMonitor
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post #9 of 13
Thread Starter 
Quote:
Originally Posted by mr soft View Post
And there was me treating you like a cmos newb

You can take your PSU down to any descent PC shop and get them to test it. It should only cost you a few bucks , some will even do it free.
Bro CMOS is my jam.

Eh, I'm not at home right now, I'm in a tiny shoddy town in Connecticut, doubt anything around here is decent (and don't have a car ). In any case I already ordered a new mobo from one of the early Black Friday deals, so with any luck that works. Otherwise I guess I'd have to buy a PSU too and see if that'd work.

Edit: Anyway I'll keep you guys up-to-date, +rep to ya's cause I really needed someone to tell me it wasn't the end of the world.
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Winter Dreams
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post #10 of 13
AOwpr, I had the exact same issue as you had with your motherboard.

I called Asus and a tech support staff said to me, if the 4 pin and 24 pin is plugged in and it has a milisecond life then shuts down(or whatever) then it is DOA.

I have sent mine back and I am getting a new one.
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