xps 8300 reinstalling raid drivers

Hello

I have a xps 8300 with RAID 0 originally install on the pc.  Recently the pc wouldn't boot.  The power switch keep blinking amber.  It was suggest that I remove everything and slowly reattach peripherals.

As a result, when I turn the pc on, it no longer recognizes  os.  It indicates missing OS.  I am trying to install Windows 7, but it doesn't recognize the hd's.  

Does anyone know how to install hd/raid driver for a fresh install of Windows 7 on my pc?

Thanks