Update: Fixed!~ Thanks to GregC for the help.
I recently replaced the hard drive on my laptop. An old Seagate 160gig with a Western Digital 500gig.
I cloned the drive and got it installed and it runs great.
The problem is, Windows Explorer still thinks it has a 160gig capacity. BIOS recognizes it as 500gig. When I go into hardware settings, the system recognizes the drive as Western Digital, but still thinks it only has a 160gig capacity.