Well, a couple things are strange there. Many people with the most recent versions, just installed linux distros had problems some solved bring Back olders versions (mint distro).i had problems myself with a very thé most recent Debian version just installed. One may says thats the distro faults. The grub was updated. But i could still accept that explanation if someone tells me how the grub files (at least one of them) where updated same exactly same time that windows were updating. I have managed to enter at grub menu and the last change on its files were same day and time windows were updating, right after i tried to turn the computer off. For the next days i used only windows and grub was still working. Then there was another Windows update and after that one, i received that scary msg that something was terribly wrong and the computer was unable to boot. What a hell had happen?