Found this here:
The question then becomes, how to determine if your BIOS is UEFI 2.3.1 compliant? I suspect most current ones are not since this UEFI specification was released in June 2012.
Booting X86 WINPE 4.0 requires that the UEFI be at least 2.3.1.
UEFI 2.3.1 started showing up early this year, nevermind the publish date on that document. There are a few ways I have found so far.
1. In the BIOS, there is an option to enable UEFI boot
2. The motherboard spec sheet mentions support for "Fast Boot"
All Intel boards (look at board rev/AA number) on this list have it:http://www.intel.com...b/CS-033076.htm
Note the exceptions below. Anything newer from Intel have it, such as X79, 77 chipsets, but some of their "embedded" type systems, do not have it such as the D2700MUD. You'd have to look at the ProductSpec PDFs to find this info.
Other ones its tough. All the new Compal, Pegatron and ASI notebooks/Ultrabooks have it, as do the A75 MSI AMD boards, but this information is even harder to find. The only reason I know those is because I've gotten in the habit of asking.