Re: GRUB doesn't see Windows 7 after installing Ubuntu 12.04
When you install either Vista or Win7, when another older Windows version is already on the drive, the default is for the installer to add the new boot loader files to the OLDER Windows partition -- which, if you upgraded to Vista from XP, it added the boot files to the XP partition.
When you removed that partition, you removed the Win7 boot loader files.
I dual-boot a lot and made sure I created a Win7 Repair CD -- so I could use that to fix these problems. With that, I don't need to run boot-repair, so I can't tell you why that didn't work. Someone more experienced in using that will have to help.
Since you didn't create the Win7 Repair CD when you had a chance, one option is to create one now -- but you will have to pay for it. IF you're willing to spend some money, go to the link below, download the ISO image you need, burn it to a CD, boot from that CD, and run Startup Repair three times, that's right, three times -- as it often takes all three passes to make the repairs:
Ubuntu 12.10; Mint 15; MS Win7 & Win8.
Will not respond to PM requests for support -- use the forums.