I am not positive, but I think that when you install a Microsoft OS, it "helpfully" wipes out any other OS that if finds on the hard drive. Or at least the MBR (so you would no longer see linux even if it was still there).
I have always been told to install Microsoft first, then fix your computer afterwards (lol).
BtW, I know that when Microsoft Windows 8 comes preinstalled on a computer, UEFI boot is enabled (I know, I had to deal with it recently when installing linux on an old friend's very first computer). Is that the case when a person installs that OS, as well, or only when the OEM does it?
Mint 17.1 Xfce 4.12.
If the fact that my post is longer than a standard SMS message causes you to be unable to take meaning from it, do not blame me for something that is either the fact of the school teachers you had or the sludge between your ears.