dual boot issue : ubuntu has stopped working after installing win 7

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http://askubuntu.com – I've had Windows 7 (64bit) and Ubuntu 12.10 installed and running fine for a couple of weeks ,due some reason I needed to reinstall windows 7 but since reinstalling windows 7 I'm completely unable to boot Ubuntu. After going through some posts, I tried to fix it using Boot-repair but instead of getting the problem solved the following message was shown: "64bits detected. Please use this software in a 64bits session. (Please use Ubuntu-Secure-Remix-64bit (www.sourceforge.net/p/ubuntu-secured) which contains a 64bits-compatible version of this software.) This will enable this feature." H (HowTos)