I'm building a computer for my friend and I'm having trouble starting it up for the first time. The first time I turned it on I had the hard drive graphics card ram and processor in and it would not turn on. Second I tried unplugging the harddrive and it started up. After I turned it off and tried turning on again it did the same thing as it did when the hard drive was plugged in. I assumed it was a bad power supply so we returned it and got another but I am now having the same problem. When I turn on the power supply it makes a chirping sound and the power LED flashes and then I can't turn on anything. I tried taking everything out and turning it on with just the cpu in and still the same problem. I'm thinking the CPU or Motherboard might be bad can anyone help?
I forgot to mention, I have the CPU seated correctly the ram too was seated properly as was the graphics card and all the LEDs and powere switched are connected properly.