What model and make is the psu?
Your sure you didn't turn off the psu with the switch?
Your sure the 24 pin and 4 pin are connected to the mb and memory is properly seated?
its a corsair builder 500W
I already made the not having the four pin CPU power attached mistake.
When I press the power button nothing happens. I mean nothing at all. No fans spin no noises get made not a sign of life. I'm not under the impression misplaced RAM can cause that type of response, but I'll double check anyway. I'll also make sure the 24 pin didn't come loose.