I have a D915PBL motherboard and a P4 540 3.2GHz CPU with a 380W PS. The system will not turn on. No fans. No post. Nothing. The only indication of any power is the "Standby LED" is lit when the power supply is plugged. I was having these issues with a 300W PS. Changed the PS to 380W. System will still not turn on. I also installed everything into a new case with no good results. I brought it down to the bare minimum with no luck. Would it be the CPU, motherboard, or both that could be bad?