Possibly to do with bios area - theres sometimes a setting called AHCI is it enabled or disabled ? What os did you install ? What is your Bios version you are running ?
sorry i dont know why its not working maybe stick with the datasheet hard drives 80 GB S-ATA 150 (5400 rpm) 120 GB S-ATA 150 (5400 rpm) 160 GB S-ATA 150 (5400rpm) 250 GB S-ATA 150 (5400rpm)