Possible Faulty PSU? First Build Ever

ClayEmmel

Reputable
Sep 28, 2015
20
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4,510
I am building a computer for the first time, so I have very little knowledge of how various computer systems interact with each other.
As of right now, this is what I have installed:
Mobo, CPU(+fan), PSU, HDD+SSD, Optical Drive, Wifi Card, Memory Cards

My Problem:
I have an EVGA Bronze 750 PSU. When I turn it on, I can see that the mobo powers up because of the lighting on it. As far as I can tell, this is the only thing that is receiving power, and all cables are connected properly to everything else. My main concern right now is that I can't even get the case fans, which are directly connected to the PSU, to turn on. The peripheral cable is attached to the PSU, and the 4pin is connected to the fans. On the end of one of my peripheral cables, there is a little female end that I assume connects with the case fan pins on the mobo. I've connected that peripheral cable to the mother board, and it does nothing, but I have also connected the other peripheral cable (the one without the female end) to the fans to test them out with what I thought should be a direct connection. Still no luck. On a side note, I used a volt meter to test the power of the CPU 2x2 power cable, and that is not receiving power either.

Sorry if I just threw random jumbled info out there, but so far, that is what I know, and with my non-existent knowledge of computer hardware, I'm kind of clueless. Please use simple computer terms, or explain terms you use so I can understand. Much appreciated!

Mobo: MSI Computer ATX DDR4 3000 LGA 2011-3 Computer Motherboards X99A GAMING 7
PSU: EVGA SuperNOVA 750 B2 80+ BRONZE, 750W Semi Modular NVIDIA SLI and Crossfire
CPU: Intel Core i7-5820K Haswell-E 6-Core 3.3GHz LGA 2011-v3 140W Desktop Processor
Case: Azza XT 1 Watt Full Tower Gaming Cases, White CSAZ- XT1 W
 
Solution
Hmm. Next thing I would check is whether the wires for the front panel header (the one that controls power switch, reset button, power and hard drive LEDs on the front of the case) are hooked up correctly. If you have the power and reset buttons reversed, or hooked up to the wrong places, that could also mean nothing's happening when you try to turn the machine on.

You'd be lucky in that event, too, since no power would've been going down that floppy drive connector when you pressed the power button.
That 4-pin female plug is probably a power connector for an old-style floppy drive, not a CPU fan. They are basically obsolete, but some PSUs include them in case someone wants to use the unit in an old machine.

http://sinnersprojects.weebly.com/uploads/1/6/6/5/16651752/2040456_orig.jpg

The motherboard fan headers should not have power coming directly into them from the power supply; a fan plugs into them and they provide power going out.

Anyway, try disconnecting that and see if things improve. I hope nothing got damaged on the motherboard because of it.
 

ClayEmmel

Reputable
Sep 28, 2015
20
0
4,510


No Luck :(
 
Hmm. Next thing I would check is whether the wires for the front panel header (the one that controls power switch, reset button, power and hard drive LEDs on the front of the case) are hooked up correctly. If you have the power and reset buttons reversed, or hooked up to the wrong places, that could also mean nothing's happening when you try to turn the machine on.

You'd be lucky in that event, too, since no power would've been going down that floppy drive connector when you pressed the power button.
 
Solution
lol, don't worry. The first time I built my own machine, it caught on fire. (No joke - I tried to daisy-chain two case fans together incorrectly and caused a short.) Luckily nothing was ruined except the fans, but we've all got at least one story of a rookie mistake like that!