Hi walidhajj and welcome to the forum ,
Nero Burning Rom cannot cope with the various possible copy-protection schematics that there are around. The only copyright protection it can really cope with is the "Illegal TOC" method. (Tick ignore illegal TOC)
I suggest you scan your original cdrom with a tool like ClonyXXXL or Scout to check the copyprotection schematic and use another writing tool suchs as BlindWrite , Alcohol or CloneCD to write your backup with.
Keep us updated ,