Jim, I haven't read through all the posts here but last time I read, we don't know what the CD drive is... It could be an odd one...

You do make a good point though. CD drives are cheap, easy to install, etc. at £15, it may make more sense to install a new one than waste hours chasing up drivers if that is what is needed (something not easy to do with a dll name that google doesn't recognise and not even a clue to the PC which may give a clue to the drive if that is unknown...).