New Custom Desktop PC Won't Start Up.

PhazeRCIL

Reputable
Aug 28, 2014
7
0
4,510
This is the first pc made and I put it all together and when you press the power button the fans start up and the Ram lights up for two seconds but then it just turns off.
I made sure all the wires were plugged in correctly and I put the MB standoffs where the MB manual said they should go.
I even tried only having 1 RAM, the Graphics card, CPU and fan, and the plugs for them in but it still doesn't start up.
I used a EVGA 500w 80+ Bronze ATX PSU at first but it wouldn't start at all and no power was getting to the parts.

Intel Core i7-4790 3.6GHz Quad-Core Processor
ARCTIC Freezer 7 Pro Rev.2 45.0 CFM Fluid Dynamic Bearing CPU Cooler
Gigabyte GA-B85M-DS3H-A Micro ATX LGA1150 Motherboard
Avexir Core Series 16GB (2 x 8GB) DDR3-1600 Memory
Gigabyte GeForce GTX 960 4GB Video Card
NZXT Source 210 Elite (White) ATX Mid Tower Case
Cosair 750w 80+ Bronze CXMSeries CX750M
LG GH24NSC0B DVD/CD Writer
TP-Link TL-WN881ND PCI-Express x1 802.11b/g/n Wi-Fi Adapter

If anyone know what is wrong and can help I would appreciate it greatly!
 

PhazeRCIL

Reputable
Aug 28, 2014
7
0
4,510


I tried starting it up with the MB out of the case and it still does the same thing. Then fans will start up and then two seconds later it turns off. I even tried using the original CPU fan instead of the Arctic one.
 

PhazeRCIL

Reputable
Aug 28, 2014
7
0
4,510


Well my dad found out that we had the polarity wrong on the power button and when we turned it around it starts like it