Needing Windows Server 2012 driver for S5000PSL

I have an older server my company uses for testing. We're trying to install Server 2012 (not VMWARE) on it setup as RAID. It has the Intel Embedded Raid II in it, but I cannot get Windows to load. I've tried all drivers I can find, and verified BIOS is the latest. I just need to figure out step by step how to get Server 2012 to load on this thing! PLEASE HELP!!