(first post) So I went through with the (UEFI) BIOS mod, flashed, installed certificate (WIN 7 Ultimate) and entered the key. Windows in genuine. OK, now what? Anything I should/can do to test my system is all good? I enabled ACPI and I know it's working (well, at least hot-plugging works - it's a useful feature for me). Anything else? Can anyone make suggestions? FWIW: mobo is GIGABYTE H77-D3H (rev 1.1).