I just got this new motherboard and every time I try and unlock the two extra cores on my phenom II 550, my computer always freezes when I run Windows experience index. It always freezes on the part where it says tuning windows media decoder. Also my computer will just freeze randomly. This does not ever happen when the cores are not unlocked. This really angers me because this is the same processor I was using unlocked and overclocked to 3.4 in my gigabyte ma785gm-us2h for over a year without any lockups or problems at all. My motherboard firmware is updated to version 6 by the way. I'm just wondering why a $200 board is causing these problems when my $70 board never gave me a problem ever. Please help, maybe i am justy unlocking it wrong I hope. Thank you.