How to install RAID drivers on already installed Windows Server 2008

Change the BIOS back to IDE Enhanced so Windows can boot.
In Windows go to :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\iaStorV
Change REG_DWORD “Start” from 3 to 0
Reboot
Change the setting to RAID in the BIOS and it will boot with no BSOD.