Is my first time installing Ubuntu 16.04 and when i was installing Ubuntu alongside Windows 8 and i have Windows 10 with "UEFI" mode, my version of windows before this was the 7 i don't know why windows 8. When i put the boot mode in the BIOS to "UEFI & Legacy mode" the grub opens and when i select "Windows 8" it throws me an error telling me the
winload.exe
isn't in the "/windows/system32/" i am searching on Internet and i don't found anything.