If you have installed FreeSaver MP3, you may have run into an issue where the program cannot be removed. This is usually caused by a number of issues, such as the fact that the application wasn't installed correctly, Windows OS is unable to locate the default uninstaller for this program, some program files have been deleted in error, or the related registry entries are corrupted. In most cases, the only way to fix this problem is to completely reinstall the application. You can also perform a full scan with an antivirus product to ensure that your PC is free of infection.
If you are worried about viruses, you can download the program from trusted websites. Then, open the application in Max Uninstaller and remove the leftover files. Most antivirus programs are able to scan downloaded programs for viruses and malware, but this is not always the case. Once you have successfully installed the program, you can run it twice, if necessary. When you're finished using it, you can uninstall it by going to the Add or Remove Programs icon.