I recently replaced my asus p4p800 se motherboard with a brand new one because I was having problems with the old one. After setting up the components, my hard drive is not detected at boot-up. However, my cd-rom drive is detected. I have tried many different hard drives. I have tried different cables. I have also reset the CMOS. What else can I try? I'm sure it's not the hard drive, cables, or motherboard. Any advidce would be much appreciated, I am very frustrated.