It doesn't work, either because it is not compatible with your system or it is not correctly installed. In order to fix the issue, uninstall the software using Add or Remove Programs feature (Control Panel > Uninstall a program) and run a registry cleaner to make sure that there are no leftover registry keys in your system. After that, navigate to the official web page and click the Download button next to your operating system version. If it doesn't work, use the provided contact form to get in touch with an official technician.
