Sata Hard drive help

[TexasMike]

Hello,
        I added a Western Digital 640 GB Sata drive to my system for FSX only. It is formatted NTSF. Windows recognizes the drive with no problem. When I try to install FSX, it slows down to the point it would take hours to install if it worked at all. I tried to install Call of Duty just to make sure it wasn't my FSX disk. Same result. I have tried running the WD diagnostics to see if there is a problem with the disk. The low level check comes out OK. I haven't run th high level yet. Does anyone have any idea what the problem might be? Configuration problem or bad drive? Any help would be appreciated.

[AMDDDA]

Have you unplugged it from the PSU and then re-plugged it?

Might be it o.O.

I know that if my joystick doesn't work, just pull it out and replug it.

[Groundbound1]

Drivers?

[TexasMike]

Thanks for the suggestions. The drive's been RMA'd and returned to NewEgg for a replacement.