First of all, try to reinstall the program and uninstall it. The uninstallation problem may end with this.
If you can't uninstall it from Control Panel, there are many softwares to uninstall applications like IOBit Uninstaller, C Cleaner, Advanced Uninstaller. Try any of these and you may be able to uninstall.
If uninstallation is completely impossible then open your Task Manager -> Go to Start-Up -> Select this particular application from the list and Disable it. It won't load any more during the start-up.
If you want to remove this application from your disk, do this. Stop all the services of this particular application in Task Manger. Then go to the location where this application is installed and delete the folder of this application that was created during installation. Sometimes you may not be able to delete all files. In that case, restart your system and try to delete once again after stopping all services, if any is running.(This is not a good way to remove the application)