Hi Shari,
Firstly, check to see that the connections to the back of the HDD (Hard Drive) are okay. Please see the below images, these should help you to better understand SATA connections:
This is the standard SATA connection onto the back of your HDD and DVD Drive:
This is the other end of the connection, where it attaches to the Motherboard:
This is so that you know what each cable does:
Let us know if this connection is secure.
If all is well and good, I recommend you change the SATA mode in BIOS to IDE emulation mode. This is so that a SATA hard drive will work as a normal hard drive, utilising the native SATA driver in Windows.
Let us know how you get on.
Firstly, check to see that the connections to the back of the HDD (Hard Drive) are okay. Please see the below images, these should help you to better understand SATA connections:
This is the standard SATA connection onto the back of your HDD and DVD Drive:

This is the other end of the connection, where it attaches to the Motherboard:

This is so that you know what each cable does:

Let us know if this connection is secure.
If all is well and good, I recommend you change the SATA mode in BIOS to IDE emulation mode. This is so that a SATA hard drive will work as a normal hard drive, utilising the native SATA driver in Windows.
Let us know how you get on.