For how to uninstall because of an error

Hello,
in my system i am uninstalling the quickheal due to some reasons but when iam again install it the various things appear it..............



your system has not been restarted after previous quick heal uninstillation. to complete the previous un-installation process successfully you will have to re start your system
quickheal cannot proceed with installation in this case please restart your system and try again




actually i have uninstall it previously but i cannot install it again because the above information dialog box appears
so as soon as possible try to help it otherwise it can damage PC