We understand that the raid controller is not fully initializing and you are getting that error. In this case I would suggest trying another slot for the raid controller if possible.
The next course of action would be updating the raid controller's firmware, you will find the latest firmware here
We would like to know the model of the Intel server and how may processors you are using to be able to double check for you if we can try something else depending on your hardware configuration.
We are wondering if you were able to follow our previously given suggestions in order to try to solve the issue.
Please let us know of the results.