I need some clarity about his? Do you have two computers that are now experiencing problems or is just the old one not functioning because you removed the burner. If you are having problems with the older one. the cables are to be wired like so:
-the hard drive should be on the ide primary ribbon cable. there will usually be a marking next to the controllers indicating which controller it is. Something like IDE1 or IDE2. I would plug the cd-rom into the IDE2 controller cable. Both of these drives will need to be set for master. In a regular computer you have 2 IDE controllers (Primary and secondary IDE). These controllers are just the physical connection to the motherboard. On each ribbon cable there is probably two different connectors. One is the master and one is the slave. Since you only have a hard drive and a cdrom drive then you should have them wired as both masters, on there own ide cable. If you didn't unplug the hard drive in this process i would say leave it alone. But make sure the cd-rom is the secondary master. Let me know if anything helped. NEIL