check all the cables, make sure they are plugged into your sata hard drive.  sata-0 is by default your boot drive, so if bios can't see it you'll never get to windows.

go buy a hard drive locally and plug it into sata 0 and see if it would see the drive in bios.  if it sees it, then you know your original drive is bad.  if it doesn't see it with the new drive then you may have a bad controller on your mother board.

I think we may have another hard drive.  It is red and looks like a small notebook.  Is that it?