>>The CD-ROM did work at that point. When I took it home ,I found out that the CD-ROM did not work,
So if I understand correctly it would appear that something happenned in transit that stopped the CD working. That would probably mean a knock or a bump had moved one of the cables. It maybe that whatever you install in the meantime will not get the drive working if a cable needs to be pushed into place. Turn the power off first. Good luck.