I had ubuntu 12.04 lts, and windows 8, dual boot was working fine..but i had lots of problem with my ubuntu, so one day, out of frustration , i formatted ubuntu drive from my windows, now, i am not able to boot windows, grub rescue opens up. So, to fix that, i installed ubuntu again on the same hard drive partition as before using a live usb thinking that boot repair would solve it for me. but, after installing boot-repair, i get a message "EFI Detected, please check options"
now, clicking recommended repair, i get an error message.. EFI detected. Please use Boot-Repair-Disk-64bit (www.sourceforge.net/p/boot-repair-cd) which contains an EFI-compatible version of this software.
I am stuck now, what to do with this iso file that i downloaded, moreover what to do overall to solve my problem.