Follow The Steps for How To Completely Uninstall Nero 9
1) Download Nero General CleanTool from here.
2) Unzip downloaded zip file and double click on extracted Nero General CleanTool Exe file.
3) Nero Clean tool will popup with listing of installed Nero Products.
4) Select the check boxes next to the Nero products that you want to remove.
5) Click Clean Button to Proceed for Uninstallation of Selected Nero Product.
6) Once finished Reboot your Computer. That’s it we have finished with Uninstallation process.
Screenshot of Nero General Clean Tool
After running Nero General Cleantool you can install any version of Nero Product.