nero.exe is a process belonging to Ahead Nero's CD and DVD writing application which allows the creation of music and movie media and CD and DVD media. "This program is a non-essential process, but should not be terminated unless suspected to be causing problems. "
Non-system processes like nero.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues