I had to read this a couple of times as there is another guy with a similar very strange problem....
I immediately see some oddities
Look at the third partition from the top
swap ntfs ????
Should there be unallocated space?
It seems that you're able to read the Linux partitions
You might be able to repair grub
Boot the live CD and follow the advice herehttp://www.linuxmint.com/wiki/index.php ... _your_grub
Take it easy and read carefully and you'll fix it if grub is still possible to read (I think)