So I have been able to install Linux Mint 18.1 beta 32bits by switching the bios from UEFI to legacy. The installation went smoothly though now I can't find any trace of Grub... The computer directly boot to windows, I tried to switch back to UEFI mode and search in the hdd for a UEFI file but there is only <EFI> and <System Volume Information> (empty). Inside the EFI folder, no grub.efi, I have <OEM>, <Microsoft> and <Boot> (with a boot.efi, I tried to add this one but it doesn't changed anything). Any idea why grub is not here, and how can I add it?
I also tried to keep UEFI instead of legacy but to disable Secure Boot, but it didn't change anything, no grub menu at boot.