You should do a couple of changes in your BIOS. First you should disable Safe Boot mode, look for it in your BIOS, then you should activate CSM to let all the boot devices be visible (at least in my asus x550c) then disable fast boot. I think with those changes you should be ready to go. Wipe your F*?-ng Windows and install that linux distro you are willing to install. In case you want to keep your windows, I think you will have to do a couple more changes otherwise your grub won't boot, but I didn't get that far, I just wiped all windows 8.x partitions.