Based On Intel Skylake Platform(Gigabite z170x-UD3+6600K+SM951+EVGA 970), install Win7 64 and Mac 10.11.6 together, original tutorial. Include all detail steps, can be 100% repeat.

Samsung SSD(SM951) install Win7 64(UEFI+GPT), after software activated can't entry the Win7 System, can't reinstall by USB Drive, even can't entry Gigabyte z170x-ud3's Bios. After remove the SSD, the Bios and USB Drive back to work. After some test finially found the solution for reinstall win7 and activated by Key.