Have you made sure you connected the power from the Psu to the back of the Hard drive ?.
I suspect you forgot to,and instead just plugged the Sata data cable in from the hard drive to your motherboard.
After that you will need to format the drive for it to be seen in windows, if you are adding it as an extra drive to your system.
If you are swapping the new drive for the old one currently in there, you will have to format the drive then re
install windows on it.
Also check in the bios of the motherboard that the Sata ports are enabled.