ok well i just changed my motherboard and cpu. I currently changed it to a ASUS p4p800s and a intel 2.8 presscot 800FSB. It runs but its just a black screen. No post. Does anyone know what happened or how to fix this? i just got it today.. its brand new so i dunno what to do. There is no beeps eaither.. comming from the computer. But... what i noticed is that the CPU came in the motherboard when it came to me so maybe the guy shorted out the CPU when he put it in? i dunno