i hv installed windows 7 on my laptop and i hv dual boot with windows7 and ubuntu and after installing the fresh copy of windows7 on my laptop i m unable to run my ubuntu....so please tell me how can i restore my ubuntu back.....
first u should try from Google. if that doesn't work then u can post here..
check here
*help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows
search for a thread with title 'restore grub' which was created by me in this open source thread. I had the same problem and this thread solved it.