cd-burner-drive 8x in device-manager

i changed one harddrive from mainboard a to b with all the necessary adjustments. then i connected a second harddrive as slave instead of cd-rom. on second channel is still cd-burner. although i tried deleting in devicemanager , disconnected the cd-burner-cable and started again(as suggested in this forum) i cannot get rid of the additional 7 drives. i have nero imagedrive too as an additional virtual drive. on my other harddisks on same board and cd-drives i do not have nero imagedrive and do not have this problem.
this problem is new. earlier everything was fine.
no other problems.