Rich

Hi i just wondered if anyone could give me your expert help i tried to fit a new Seagate 160gb hard drive in my compaq evo d310. I fitted the hard drive and my pc recognised the drive so i saved the changes then i got a message saying; Non system disk or disk error, replace and strike any key when ready. there were no disks in any of my drives,i just wondered if you would know of any other things that may be causing this problem or if it could be the hard drive at fault. Thankyou Rich.