I cannot uninstall QuickHeal Antivirus, the security center displays there is no antivirus software installed, but the software is showed in the programs. I need help.
Try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.