If you've got no display it's either 1) Video Card 2) Power Supply 3) Motherboard, in the order of likelyhood (at least in my experience). Any one of those will prevent your computer from POST-ing, which is why your peripherals power up but don't function
I'd start with the video card since it's the easiest to swap out (if you have an old one kicking around somewhere), then the power supply. If neither of those fix it, then you probably have a fun rebuild ahead of you
|