Nero: Installer Issue – There is a system reboot pending. Please reboot your system and after this start installation again.

This is a big problem with the validator of the Nero installer. I am going to give you the simplest solution that should work every time.

Download the stub installer for the trial version of Nero. Execute the stub, let it download and install the trial version. Once installed, activate the product using the key Nero provided you when you purchased the product.

Done!