I understand that you are having problems with your RAID card on the Intel(R) Desktop Board DQ67SW.
I can confirm to you that RAID controller cards are not supported on Intel(R) Desktop motherboards, and that the PCI Express* 16x is designed to work for video cards, but it it is not limited to only use them. You can use other types of cards on the PCI Express* 16x slot.
In regards to the problem that you are experiencing, the issue does seem to be related to compatibility and currently there is no work around for the problem.
This problem is still alive, even with BIOS version 66..
It would be nice if a developer could take a look on this...