2x G.SKILL ECO Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBECO
XFX Black Edition P1-750B-CAG9 750W ATX12V v2.2 / ESP12V v2.91 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply
GIGABYTE GV-N460OC-1GI GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card
I have the motherboard on a non-conductive surface (a book), with the processor (and cooling), 1 dimm of memory (in the slot closest to the processor), and the video card attached.
The CPU fan is connected to the CPU_FAN port.
I have the 24/20 pin main power connector connected to the ATX port on the motherboard. I have the 6-pin portion of the two 6/8 pin PCI Express connectors connected to the two corresponding ports on the video card. I have none of the modular cabling attached to the power supply.
The case's power switch wire is connected to the power pins on the F_PANEL.
My understanding is that this is the simplest configuration (and is therefore where I should begin testing). This is my first time building a machine by myself, so it's possible that there's something silly I forgot to do/connect.
When I turn on the power supply (using the switch on its rear) and then press the power button on the case, the phase LEDs light up, the fans (processor and video card) begin to rotate, I hear a single "click" sound, and the LEDs go off, and the fans wind down. About a second later, the process repeats.
Work through the thread. It should help you find your problem.
ALso, while you have your system breadboarded, remove the video card and RAM. Boot with just the CPU & HSF, motherboard, PSU, and system speaker. If everything is working at this point, you should hear a continuous series of long beeps - indicates the you have no memory present.
Silence indicates that you have a problem with, in most likely order, the PSU, motherboard, or CPU.