[kubuntu] About Grub problem and Removal of Kubuntu

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http://ubuntuforums.org – Hi there guys.. is there any simple method to recover Grub? I am not so good at programming and not with linux please give some simple solution.. The Grub is main reason due to which i am stuck with wubi installation method. And i want to know how to remove kubuntu without messing up my whole system. I want to keep both Windows 7 and Kubuntu.. Thanks :) (Hardware)