I have looked online for answers and I have tried a lot o things. I have tried to reset the PRAM and SMC. Neither of those worked. I then bought a new LCD, Motherboard, cable for LCD to Motherboard, Hard drive and keyboard, trackpad, and the USB/Miny DVI port. I have tried booting of a USB dive and a DVD on a Apple SuperDrive. It will make the chime when I hit the power button and it sounds like it is booting off the CD but it doesn't display anything on the LCD of a tv I have it plug into. Does anyone have an idea of what I could do to fix it. I have replaced almost everything with brand new parts.