DL380 5i Controller

Hi

I got a problem with my DL380 G2 server, I had to restart the after i installed backupexec and when the server starts to ppost it dosen't se my 5i controller no more.
I tried everthing, I removed all scsi cables and power cables and took ouut the the 5i controller and the battery froom the system board, but that dident help there are still no lives in my 5i controller.
Can any one help me???