Originally Posted by
FELIX
OK, I made a post about it 2 week ago, but all is erasing:
They are two bits which lock the Memory Configuration Space access in Core i7:
One is named MEM_CFG_USER_LOCKED (Bus:255, Dev:0, Fct 0, OffSet:88 bit[1])
and the other MEM_CFG_LOCKED (Bus:255, Dev:0, Fct 0, OffSet:88 bit[0]).
Both are Read Only bits, but MEM_CFG_USER_LOCKED bit can be unlocked under Win
by setting at 1 the bit: Bus:255, Dev:0, Fct 0, OffSet:88 bit[1].
-On eVGA MBoards, both are unlocked.
-On GigaByte MBoards, only MEM_CFG_USER_LOCKED bit is locked, so simply writing
in Bus:255, Dev:0, Fct 0, OffSet:88 bit[1] and it's OK.
-On AsusTek MBoards, MEM_CFG_LOCKED bit is locked: I can't do nothing.
-On others MBoards, both are locked and I can't do nothing too.
So, two solutions:
-First, MBoards bios engineers can simply unlock MEM_CFG_LOCKED and a bios update will fix the problem.
-Second, a bios mod, but we don't know how to unlock MEM_CFG_LOCKED for now; perhaps at next.
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