First, the motherboard must have the ability to unlock cores. Not all do. On the manufacturer's website for that motherboard I see no indication your motherboard has that ability. It is not mentioned. But if it does, that feature would be in bios. It might be in the OC Tweaker section or in the Advanced section and would be termed something like "Core Unlocking" or "Core Control." You can't do it from Windows. I tried downloading the user manual for your motherboard but it doesn't have a section dealing with the bios features.
It says it allows you to manually activate or deactivate core 2 and 3. This is what I would try. Set core 2 to enabled and see if you get three cores at start up.
Just FYI some cores are disabled for a reason.
Apparently it does have the ability to unlock cores. Johan, where did you get that manual. Manuals library? Is that free?
Anyway, zoran, the feature to enable core unlocking is called Advanced Clock Calibration or ACC. You must have it enabled.
Please realize that not all CPUs with disabled cores will have viable cores to unlock. If they are too far out of spec it just won't work. Or maybe one out of two will unlock successfully but the other core will not.
Ok I enabled ACC and I put firmware to hybrid then windows restarded and in the boot shows quad core but can't get to windows loading because system shut down itself. All the time soo I back all to normal and disable acc again