So I had this computer 5 years now it came with a 500GB hard drive that has recently failed. About 2 years ago I got a sea-gate 3 terabyte drive I put all games and programs and back up all documents to once a month to Its disk D. I formatted 2 terabyte's of it. The mother board is a Asus M4N68T-m. The computer came preloaded with the windows installed on the 500B. I was sent a disk with windows 7 on it and a disk with the drivers for the mother board. My problem I am having is that the 3 terabyte hard drive is not showing up in the option on were to install windows to. I know the hard drive is good and it also shows up in BIOS. My question is how do I get the installer to see the drive? Do I need to install the drivers off the mother board disc and if so how do I do that? I have also tried different SATA ports as well.