New computer won't boot up (was working before)

thekingofstyle

Honorable
Sep 16, 2013
8
0
10,510
So I have just built a new computer, and recently it is not powering on. It was powering on just fine a week ago, but I would have problems with freezes and having to reboot when it came out of the suspend mode.

When I plug in the power cord to the back of the power supply, the case fans turn on for a second or less, then turn off. I get no response of any sort when I press the power button on the front of the pc. I'll have to double-check if I'm getting any speaker beeps.

System is:
Intel Core i5-4670K (new)
ASRock Z87 Pro4 LGA 1150 motherboard (new)
Corsair CX430 power supply (new)
Crucial Ballistix Sport 2x8GB DDR3 1600 RAM (new)
MSI GeForce GT430 graphics card (leftover from old system)
1x128GB 5400RPM hard drive (leftover from old system)
2x250GB 5400RPM hard drives in Raid-1 (leftover from old system)
1 CD/DVD drive (leftover from old system)
Rosewill Black Challenger U3 case (new)

The fact that it was just powering up before leaves me somewhat stumped.
I did read the troubleshooting guide but I don't think many of those steps apply because the computer did power-up before.