I need help on installing a 160GB hdd into my old dell dimension 3100. I stuck the hdd in, which is sata, and connected the cables and power stuff. But when I turn on the PC, windows does not load. What happens is that it just stays on the first screen, the BIOS screen. I need to know how to make the new 160GB the secondary drive, and the first one the primary drive. In other words how do I set up the BIOS for a dell dimension 3100.