Give these things a try:
- In the bios, you should have the Sata set in IDE mode, do you?
- In the Bios, you should have the Sata options enabled, do you?
- Are you certain you have the Sata hooked to the correct connection on the motherboard?
- Do you have the Bios set to boot as follows:
CDRom - 1st
Floppy - 2nd
Hard Drive - 3rd (in this case the IDE since that is what you want to boot from)
- Do you have the Hard Drive Priority in the Boot area set with the IDE (boot drive) listed FIRST?
- Have you downloaded and tried the Hard Drive manufacturer's utility to see if it recognizes the drive?
- Do you know anyone who has another computer, you can simply try this drive in to see if it works there?
It would really help if we knew what motherboard you are trying to use so we know the options that are available with this board since most boards are slightly different.
Give these a try and see what happens.