How to check in Windows if you are using UEFI
You might be wondering if Windows is using UEFI or the legacy BIOS, it’s easy to check.
Just fire up MSINFO32 and look for this entry:
There are two possibilities here, either UEFI or Legacy.
FROM: http://blogs.technet.com/b/home_is_where_i_lay_my_head/archive/2012/10/02/how-to-check-in-windows-if-you-are-using-uefi.aspx