In Win7/Win8 you have to be logged in (into Windows) as Administrator (or your account has to have admin privileges), otherwise EFILive can't create/write that file.
Hmmm... I am Admin, there is no other users?
Really should not have to run program as Admin like this?
Well ran as Admin and it works?
I hate when that happens...
Just should not happen with only one user as admin but it does, so Windoze issue.
Cure: Computer/C/Program files (x86)/EFI Live/V7.5/EFILive_Tune application icon, Right click, Properties, Compatibility, Change for all users or just Admin, Run program as Admin. I did EFILive_Scan while I was there.