Crosshair IV Formula DRAM problem

Just finished putting my computer together, went to start it up... and I cant get past the DRAM light :-/ In case youre unfamiliar with the mobo, it has a series of lights that glow red when theres a problem when turning the computer on. The DRAM light is a solid red right now though, and I cant figure out whats wrong for the life me. The RAM is set in snugly, Ive tried a single card, two cards [one per set of slots], ect/ I highly doubt all 4 sticks are DOA's... any suggestions on what I could possibly do?

Specifications:

Processor: AMD Phenom II X6 1090T Black Edition (3.2GHz) (6 Core) (6 MB Cache)
AM3 SocketMotherboard: ASUS Crosshair IV Formula AM3 AMD 890FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard
System Memory: G Skill 16GB (2 x [2 x 4GB]) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Power Supply: ABS SL series SL1050 1050W Continuous @50°C
Video Card: 2x SLI Dual (NVIDIA GeForce GTX 470 1.2GB (PhysX) (EVGA SuperClocked 012-P3-1472-AR)

What operating system are you using, is it a 64-bit operating system?

Are you following the user's manual to be sure of the proper way to populate the RAM when using two modules?

What operating system are you using, is it a 64-bit operating system?

Are you following the user's manual to be sure of the proper way to populate the RAM when using two modules?

There is no operating system installed yet. The motherboard needs to go through a process before it even lets me see the mobo's BIOS, and detecting the RAM is one of those steps. When I do install, it will be Win 7 Ult 64 bit, since 32bit wont use over 4g.

I've doubled checked both the motherboards user manual and the companies site- I'm positive the RAM was in the correct slots for both the single and dual card configurations. For when I was using four cards, well... theres only four slots, so it shouldnt have mattered where I put which card.

Bump. Would like to know if this is fixable before buying different RAM to test out.