i5-3750k (yet to be installed)
8GB HyperX DDR3 (yet to be installed)
OCZ ModXstream 600w
I connected the 20+4 and the Other power connector to my motherboard, but none of the LED's light. I know that my power supply is working because it powers all of the case fans. What might be the problem?
The LED's on the mobo won't even light if the RAM and CPU is not in?
Well, not with the CPU not installed, it won't. If the CPU was installed, but still no RAM, it would probably at least give you a RAM error light, but without the CPU, it won't do anything (lights etc.).