Please take a picture of the error and upload it somewhere, I recommend http://imgur.com/
HBA is probably the SCSI HBA - this sits between the motherboard and the SCSI devices.
It's possible to have more than one controller/HBA, it is possible that your devices/disks are not connected to this SCSI HBA and that it is unused.
For diagnosing these server it's a good start to boot on the smartstart CD. It's also a good idea to upgrade firmware with the CD previously mentioned, this might be something that's fixed in a firmware update.