Cyberlink DVD Suite is genuine software, but I personally just prefer to use VLC player.
I can only guess that it was a botched install/uninstall.
Look at the media that came with your computer and see if you can reinstall it, and hopefully then you can also uninstall it.
If you do not want to do this, go to
My Computer and right click the
CD/DVD Drive, next go to the
Autoplay Tab, and you should be able to control default actions from there.
To then remove Cyberlink DVD Suite, take a look in its program folder and see if there is an uninstall utility, if there isn't, try to download a trial of the latest version then uninstall it, or if the guide above works, you may just want to leave it there. It installs a lot of codecs and system files and you do not want to just start deleting it.
(If however you do want to start deleting, you may want to take a look at Microsoft / Sysinternals Autoruns which should allow you to see various drivers and codecs that are located in the Cyberlink folder and delete the system links before deleting the files.