Incorrect Drive B Error

When I start up the computers in the lab each morning, several come up with the following error: 02B3: Incorrect Drive B type – run SETUP…press esc to resume… to Setup
Our IT team hasn’t been able to find a solution to this for close to a year now. For reasons unbeknownst to me, it seems to be spreading now throughout the building. It appears we now have 15 computers on our LAN with this same error. Any suggestions?