Just as a sanity check, did you connect both the data and power cables to the drive? Try unplugging / replugging the cables, or even using different ones to rule out the possibility of a cable issue.
Also, some motherboards have more than 1 SATA controller and if you plugged the drive into a port for different controller than the one for your hard drive there's a chance that the other controller has been disabled in the BIOS.