Just to make sure you have the 8 pin, 24, power connectors connected to the motherboard, and the power cable to the video card with the monitor hooked up to the video card.
Remove your memory and try 1 stick at a time in each ram slot. If nothing with that stick of memory then try the same thing with the other stick.
If still no go them remove the video card reset CMOS hook the monitor up to the motherboard (report back)
Hi. I tried all those steps, including popping the motherboard battery out and "resetting" it and still have no change. The power light still comes on and nothing else. It's all obviously receiving power but it's not communicating. Could it be a faulty cable or maybe incompatible RAM (though I'm like 99.9999% sure it's compatible RAM)? Or is the CPU incorrectly installed (it's definitely receiving power)?
Thanks again for your help.
Edit: Oh, and the "xLed" is on as well.