I would recommend you to reinstall Kaspersky Internet Security and then use its official uninstaller to try to uninstall it. If that fails, you should contact Kaspersky as to how fully uninstall their product.
In cases of anti-virus or related products, jv16 PowerTools might be unable to uninstall them because anti-virus products typically protect themselves against uninstallation. (Otherwise any virus could just simply uninstall them when infecting your computer.)