Motherboard or PSU please help!

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Mello232

Mello232

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Oct 16, 2014
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I am not at all an experienced PC builder but I had help from someone who was around 2 years ago in building a pc. It has been fine until recently when the PC would turn on but not boot or have a display on. Upon looking inside I could see all fans running except the CPU fan, which explained why the PC was not booting up.

In removing and checking everything I now see that the 24 Pin connector to the motherboard when wiggled around or pushed up and in would start the CPU fan and the pc would begin to boot no problem. However, it reboots eventually sometimes after hours and or the fan stops and back to no display.

I'm trying to figure out if this is coming from a problem with the PSU or if its the 24 pin slot on the motherboard that's causing this? If anyone has any other tips on diagnosing/fixing this problem I would greatly appreciate it. I don't want to replace the wrong part if it's needed.

The Motherboard is an ASUS P7P55D-EPRO and the PSU is a TX750M Corsair.

Thanks for any input and help!
 
Solution
A
Just check if you can see all the metal connectors when you look in all the holes, also try to push down every little cable. Next step i would try is to get another 24 cable and try with that.
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geofelt

geofelt

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Oct 9, 2006
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You have done well to isolate the problem.

The 24 pin connection is usually a very tight one.
The psu 24 pin cable has a latch on one side that hooks on to a ridge on the side of the motherboard 24 pin socket.
If the latch is broken or not closed, the fit could become loose.

Corsair TX is normally a very good psu, is it still under warranty?
 
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Mello232

Mello232

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Is it easy to tell if they are out of place, if they are is it possible to fix that?

 
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Mello232

Mello232

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Thank you, yes It latches on and snaps in with no problem. That's why this seems odd to me. The PSU has a 5 year warranty so yes. Glancing at the requirements on their site, it seems like it may be a hassle to go through. But if I have to then I have to.
 
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A

Alessandro Frioli

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Just check if you can see all the metal connectors when you look in all the holes, also try to push down every little cable. Next step i would try is to get another 24 cable and try with that.
 
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Solution
Mello232

Mello232

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I1JUdw.jpg


Is there supposed to be one missing like that?
 
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Mello232

Mello232

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Ok I'll see what I can do, I think trying another 24 pin first will be easier, I'll post results. Thanks!
 
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Mello232

Mello232

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3 of the top pins were pushed way back and I used a tweezer to push them back to the front. So far powered on with no problems, if it stays that way I'll update again! Thanks! If it continues to happen I should just get another 24 pin connector correct? And how would that connect to the PSU? what would the other end of the cable be?
 
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Mello232

Mello232

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Oct 16, 2014
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Mello232

Mello232

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Oct 16, 2014
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Not having any luck.. I'm thinking my next move may be to get a 24 pin Extender cable to see if that fixes the issue? Think that may work? If not I'm thinking of getting another PSU, have been looking at a Thermaltake 850W SP-850M. I've put in an RMA for my Corsair but I can't be waiting around weeks for that.
 
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