Could be but IIRC if you get the option to choose operating system ala Windows boot-loader style then it means running on WUBI... If its a native installation, usually GRUB loads first on Win8... Of course he is upgrading so could be Windows boot-loader has taken preference again... The best bet would be to re-enter into the Windows installation mode and re-install or repair computer... Then again this seems to be a case of pebkac
I will vote AMD for president next time if I'm having any shares during next meeting.