did u put the cpu in the correct way? if the old cpu doesnt work maybe the psu or the mobo died
Yeah I know I put the CPU in correctly. When I boot up I still get the blue power led and the green read/write led but they aren't blinking so I don't know about the psu. I saw on another forum that you can fry a mobo by simply crossing the FireWire and the USB cables? If that's true that may have been what happened because I just double checked the wiring and the front FireWire jack was plugged into a USB contact.