I've tried all BIOS revs. 1.36, 1.4, 1.5, 1.6... and now I'm with 1.5b4. but when I'm trying to unlock the second core of mine Sempron 140, the BIOS correct recognize it as Athlon II X2 4400e, but the windows (XP & Vista) can't boot... it is stopped while loading \WINDOWS\system32\acpitabl.dat
With BIOS 1.6 I was able to boot, but there was only 1 core in the Task Manager :-(
Keep in mind that the same CPU is running @ 2 cores great with my other MB - ASRock M3A790GXH/128M !?!
What do you expect. As i said in another post, they lock it for a reason. Mostly they are flawed cpu's that is why 1 core is turned off. And that it works on another board doesnt automaticly say its stable or that it doesnt error once in a while. You bought a 1 core cpu that works fine with the one core, so please dont complain that the second doesnt work. If you want a dual that works fine with both cores, buy one
, they dont cost much anymore these days, especially AMD's .
And dont blame the board/bios or MSI because that isnt the problem here.