Grub Win 7 issue

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http://askubuntu.com – is the first time i use Linux, i have a grub issue... after reading a lot on this forum i still have doubts, here's what happens: i first install a distribution of back track 5, it works fine, the grub menu appear normally (gives me the option of win 7 loader) i have no idea of how to use backtrack so i enter win and delete the partition (big mistake), when i reboot the PC pop up the grub error, i try fixing the win 7 booting with a live cd (doesn't work) so i decide install Ubuntu 12.04, it works fine the problem is that in grub menu instead of Win 7 loader are this: Windows Recovery Environ (HowTos)