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We can try back up superblocks.
Info:

http://linuxexpresso.wordpress.com/2010/03/31/repair-a-broken-ext4-superblock-in-ubuntu/
Remove first inode to use alternative superblock:...

Script cannot see sda5 partition, so that is why grub is having issue also. I suggest filechecks as most likely fix. Did system get shutdown abnormally as that is the most common reason for file...

Welcome to the forums.

Not sure what error happened. But if kernel or init are damaged then grub could not update and then you cannot boot.

First lets see what this shows.

Post the...