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I am trying to get Windows 8.1 x64 or Windows 10 x64 to load, but it keeps telling me that I do not have the prerequisites. When i run Microsoft coreinfo.exe, i get the following:
CX16 - Supports CMPXCHG16B instruction
LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode
PREFETCHW * Supports PREFETCHW instruction
This means I am missing the CMPXCHG16B instruction set, which is preventing the Windows installation from succeeding. I've looked around a lot, and I've read instances of the E5450 supporting CMPXCHG16B as well as the EP45-UD3R supporting CMPXCHG16B with other CPUs (specifically the e8400), but nowhere have i found someone running Windows 8.1 or 10 x64 on an EP45-UD3R with the E5450. Have any of you?
I am pretty sure its my microcode that is not right, but when i run:
intelmicrocodelist.exe MODEP45UD3R.F12
I get the following output:
CPUID=1067A Rev=A0B 2010/09/28 CRC=B007E7E3 Off=DEFDF Size=2000 Plat=0,4
which looks right to me.
I am clearly missing something; does anyone have any ideas where to look?
TIA for your help,
Chris