Hi the SATA mode is definitely set to AHCI. I initially powered up with all 3 devices plugged in but have since tried each one in each of the MBs 8 sata connectors with no joy. One time the message didnt show and I got to the BIOS with only the Western Digital HDD plugged in but I have tried since and it will not happen again even plugged into the same connector.
At first I had HDD & SSD attached to intel 6.0 GB/s connectors and DVD drive attached to intel 3.0 GB/s connector. I have since tried each device in each type of SATA connector - the intel 6.0 and 3.0 as well as the 2 Marvell 6.0 GB/s connectors
In that case try just the SSD on 6GB/s port 0 and DVD drive on 3GB/s port 0.
Boot with the OS disk in the DVD and start a format/install on the SSD.
If you get a successful OS install, add the HDD on 3GB/s port 1 and format.