BIOS shows drive capacity is 1TB, but WinExplorer show it's only 9MBs

I just built a new computer and I'm trying to use my old one as network storage. I purchased a 1TB Seagate drive to add to the old system to increase storage. When I view the data on the drive in the BIOS it displays as being a 1 TB drive. When I view the properties in Win Explorer it says the drive only has a capacity of 8.99 MBs, and about 3 of that is already filled.

Do I have a bum drive or is there something else going on that is fixable? I can still RMA if I need, but on face I would think the drive is okay given it's readout on the BIOS.

For what it's worth the MB is an ASUS P5N32 SLI-SE Deluxe, Intel E6600 C2D, about 4 Gigs RAM, Win7 Home Premium.

Any help you guys can give will be appreciated.