Computer issue! Please read

Liquiduk

Liquiduk

Liquiduk

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So today I took the day off to set up my new computer, I bought myself a Corsair AX750 Modular powersupply and a new Corsair 600T graphite white case. but I have some problems... I have been sitting here making it look all neat and tidy wiring it up and when I am done BAM I can't turn it on. So it worries me because I have never plugged up a modular PSU before so whether or not I have gotten the wiring wrong I don't know but here is the thing. My motherboard is the MSI 870-C45 AM3 socket board and it has a 24 pin socket yet my old powersupply ran it with a 20 socket plug (non modular, 500w Elite it came with the Coolermaster 430 case) so I am stuck right now wondering what to do... Have I plugged the LED's in wrong? Can someone help me on how to plug them up correctly and the same with the modular PSU.

Thanks,

Max
 
stulid said:
Plug in a 24pin ATX from the PSU (20+4pin) into the board.

Up near the CPU is another socket usually 4 or 8pin, take a 8pin ATX from the PSU and plug this in, if its only a pin socket, split the 8pin from the psu into two.


LEDS dont matter now, that wont stop a PC turning on.

Ity also doesnt matter which way around the reset switch pins or power switch pins go as all they do is quickly short the two pins together they are connected too.

If you have a GFX card that needs additional power into the side of it, use PCI-E connectors from the PSU and fill them all up (whether it be 6pin, two 6pins or a 6+8pin)

A detailed list of your parts will also help.
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Judging by everything you have approached me with, it is all looking A OK. what worries me is what I have plugged in to the actual PSU, which I will take pictures of and post up right now.
 
Here are the pictures of what I mean, the ATX cable in red is what I have plugged in and its only 18 pin which confuses me, then there is a 10 pin which is highlighted in yellow on the same cable. and finally the blue highlight is to show where I have plugged the 18 pin in too.





and another for example



Thanks for your help,

Max
 
Thanks for the help stulid and I think we are a step ahead but i appears that didn't resolve the issue which brings the question up of what next? :S
 
do you mean the ones for JFP1 or JFP2? Because all the small ones i.e Power LED + -, HDD LED, Power switch and reset switch are all plugged in to JFP1. In this order..

PWR LED | PWR Switch |
+ -
HDD LED | Reset Switch

edit: There are these two pin cables that need the caps pulling off them also. I have used them as my power for my fan's. Is that what I am doing wrong?
 
Buchanan0204 said:
Off topic. What's your first impressions of the case. It's the one I have my eye on for my next case.
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Not a problem - Massive, absolutely massive. Looks great and a real quality build Corsair put a lot of effort in to this. I will tell you more when I can turn the bloody thing on xD.
 
stulid said:
Just short them quickly, it replicates what a push of a power switch does.

Is there any life at all? a light, movement of fan blade?
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That didn't do anything I am afraid. No life and there hasn't been any life at all. Those two pins at the back coming from the bay wouldn't have anything to do with it would they? I am assuming no.
 
Jano said:
Stupid question time, I am assuming this but just in case -

The cable from the PSU to the top of the Mobo, the 4 pin, did it reach ok or have you had to use an extension? If you had to get an extension maybe try it without.

Mine didn't reach, but then its not a Corsair, and I would imagine Corsair would make their cables long enough considering its their own case.
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Not a silly question at all. Well one of the cables I got with the PSU was actually long enough then I tried the slightly shorter one and I still haven't got any response from anything in my computer.
 
I have tried socket from wall, following that I tried a different kettle lead. I have taken out all drives and only have one stick of ram in. Still no boot.
 
Jano said:
Two sets of cabling, one longer? You haven't used the GPU power cable to the CPU have you?
Click to expand...

That would be near enough impossible and no I haven't. I have used the split 8-pin cable with two 4pins and used one of the four pins to power the CPU.
 
It is on the stand offs. I have tried the 0 position and wouldn't the paper clip trick be tricky as my cables are braided? Beginning to think I have some DOA on my hands :/
 
Fans are spinning, the paper clip trick... IT WORKED! Now what'd we think guys?

Not only did it work on the molex, I also must have left my case fan's plugged up also and they all powered up beautifully.
 
Last edited:
I didn't remove the CPU no, I held the motherboard from the cooler and also from the side though, may I have knocked it off its perch a bit?

Shall try that.
 
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