Yes, only reinstall grub booting from the live cd.
See this <a href="https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows">page</a>
Last Wiki Answer Submitted: March 16, 2011 8:37 pm by Mariodlg2,790 pts.
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U can also use SysResCD (free download) or better say System Rescue CD for restore grub. Also there is a manual way to restore grub.