Computer board Q - Custom build powers up then shuts down quickly
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Computer board Q - Custom build powers up then shuts down quickly
Posted by rmc on 5/22 at 7:56 am
I have researched this pretty throughly but, while a new MOBO is being contemplated, I wanted to see if anyone here had any insight to this.

Some details:
600w PSU, Cooler Master -- tested with multimeter -- fine.
Biostar TForce P965 -- the suspected problem.

So if i just have the 24pin plugged in the system boots, but there is no video output. If I plug the additional ATX 12V 4 Pin in, I get this issue of power up then immediate shutdown. It's not:
(1) RAM
(2) Video card itself
(3) CPU
(4) PSU
(5) A short due to the board touching the case.

I've deduced a couple of things -- the video cards power is controlled by this ATX 12V 4 Pin connector, and the ATX 12V 4 Pin connector itself is shorted or damaged.

All research seems to suggest that this has happened to people on multiple mother boards, all of which seem to be socket 775. This motherboard has been run everyday all day for the past 6 years or so. Socket 775 is discontinued at this point, but this computer ran like a champ. Unfortunately, I can't find the exact board anywhere, which would be my preference.

Anyone think there is any other possibly workaround here? It's a relatively cheap fix since socket 775 mobo's look like they are going for 30-60 bucks. I'm probably going to do a new build in about 1-2 years.



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Posted by Srbtiger06 on 5/22 at 8:22 am to rmc
I might have one lying around at the house if you want it.


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Posted by jcole4lsu on 5/22 at 8:54 am to rmc
Have you tried using a different power supply? just because the PSU passes a multimeter test does not mean its not the problem.

Have you switched the CPU? a flawed cpu can cause immediate reboots or shutdowns.

If you have access to spare parts and can try the above i would. If not, get a cheap replacement mobo to get you through until you are ready for a complete new build. Its most likely the mobo but that isnt a guarantee.



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Posted by rmc on 5/22 at 8:57 am to jcole4lsu
I failed to mention that I did in fact test with another PSU that was in another computer and is working fine. I also stuck the PSU from this computer in the other and it ran fine. Just to make sure I threw the multimeter on it.


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Posted by rmc on 5/22 at 8:58 am to Srbtiger06
quote:

I might have one lying around at the house if you want it.


If you do, let me know. I may be interested depending on the specs.



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Posted by jcole4lsu on 5/22 at 9:05 am to rmc
almost certainly a flaw in the motherboard. dont spend over $65 on a replacement, since you have stated interest in doing a full build soon.

check top rated US sellers on ebay.



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Posted by Srbtiger06 on 5/22 at 9:12 am to rmc
quote:



If you do, let me know. I may be interested depending on the specs.


I'll check when I get home. If it works for you can have it if you'll just pay shipping. I honestly don't know why I kept it



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Posted by rmc on 5/22 at 9:36 am to Srbtiger06
Let me know. I'll pay shipping if you are willing to give it up.


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Posted by HeadChange on 5/22 at 5:35 pm to rmc
My first build, it was some little wire that I didn't connect to the motherboard. Computer would turn on then shut right off. Went back through the manual that came with the motherboard and realized there wasn't anything plugged into there, plugged in, no problems.


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Posted by rmc on 5/26 at 3:51 pm to Srbtiger06
quote:

I'll check when I get home. If it works for you can have it if you'll just pay shipping. I honestly don't know why I kept it


SRB you can just hold off.

Just to update for anyone that cares:

I think my HD platters froze up and my HDs are not spinning. I've kind of deduced that from feeling the HDs heat up but make no noise at all and also not picking up in my external enclosure. I understand this can happen from running the HDs 24/7 for years and then shutting them off for several days. This is in addition to the ATX 12V not taking power.

So... now I am trying to freeze the one that doesn't have anything important on it to see if I can get the platters spinning again. If not, I'm going to bring the one with all the important data (pictures of my kid for the past 6 years, quicken file, etc) to someone to recover it.

I am also in the midst of building a new system using some of the components left over. Just gonna buy a new mobo/cpu/memory/hd.

Slightly pissed off at myself for not doing an regular external backup (althought I didn't expect both internal HDs to fail at the same time) is an understatement.


This post was edited on 5/26 at 3:52 pm

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