PC Won't turn on, and shows no sign of power! HELP ME PLEASE!!

So my PC wont turn on and doesnt show any sign of power. I have already replaced the MoBo, PSU, and Case to attempt to fix this issue. I have (or I at least think I have) everything correctly connected and seated. May I also add that the switch on the back of the PSU is correctly flipped to allow power to get through the PC.

My build is:

Case: NZXT Phantom 410 CA-PH410-W1 White Steel/Plastic ATX-Mid Tower Computer Case

Power Supply: Corsair Builder Series CX600 600w ATX 12V PSU

Disc Drive: Sony Optiarc 24X DVD Burner Bulk Package Black SATA Model

Motherboard: ASRock A55 Pro3 FM1 AMD A55 (Hudson D2) Sata 6GB/s USB 3.0 HDMI AMD Motherboard

RAM: (1x) Kingston HyperX 4GB 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory, (1x) Corsair Vengence 16GB (2x 8GB) 240-Pin DDR3 1600 (PC3 12800) Desktop Memory

Hard Drive: Seagate Barracuda ST500M002 500GB 7200RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive, Seagate Barracuda ST1000DM003 1TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive

Central Processing Unit (CPU): AMD A8-3870K Unlocked Llano 3.0GHz Socket FM1 100W Quad-Core Desktop APU (CPU+GPU) with DirectX 11 Graphic AMD Radeon HD

Graphics Card: XFX HD-657X-CNF2 Radeon HD 6570 2GB 128-bit DDR3 PCI Express 2.1 x16 HDCP Ready Video Card

Operating System: (Original) Microsoft Windows 7 Home Premium SP1 64bit - OEM, (Current) Microsoft Windows 8 Professional Upgrade

Please, any tips and or help will be greatly appreciated! Thank you!
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