If it works without the supposedly bad drive then it is most likely a bad drive.
I was unclear in my message. I just unpluged the Hard Drive that was working fine to install another hard drive and once I replaced it the ASUS motherboard
and finds it and calls it a bad drive. I have set the BIOS to ACHS but still unable to boot computer. Now it says missing BootMgr once it boots. Sorry I was not
clear in first message. Maybe I just screwed up the BIOS.