new computer hard drive wont show up. new computer hard drive wont show up.

I bought a new computer a week ago with no os I bought a new computer a week ago with no os installed. I load up windows 7 and it gets to the installed. I load up windows 7 and it gets to the point where it asks where you want to install it point where it asks where you want to install it and my hard drive doesn't show up. I check to and my hard drive doesn't show up. I check to see if it sees it in the bios and its not there but see if it sees it in the bios and its not there but it shows it recognizes it for a split second after it shows it recognizes it for a split second after I press delete to get to the bios. It shows the I press delete to get to the bios. It shows the 999.99 gigs hdd and then goes to the bios. I 999.99 gigs hdd and then goes to the bios. I haven't changed anything yet as I don't know haven't changed anything yet as I don't know what to do and I am bios illiterate. I don't know what to do and I am bios illiterate. I don't know how to format and partition it from a fresh how to format and partition it from a fresh install. Help would be very appreciated as I spent install. Help would be very appreciated as I spent 1300 on the ******. 1300 on the ******.