Trying to unlock 4 cores. Windows 7 won't boot.

[Meresgi]

I have a Phenom II X2 555 and a GA-MA785GM-US2H motherboard. The board is capable of unlocking the 4 cores on my CPU. Here is what happens:

I go into the bios, set advanced settings as hybrid + auto to enable the 4 cores, go back out and increase the voltage by .25 for the cpu each attempt and the northbridge voltage slightly. Each time I get to the windows 7 loading graphic with the swirling lights, it freezes and I have to hard reboot and up the voltage by another .25. It still isn't working, I also decreased my cpu from 3.2 to 3.0 wondering if that was the issue when unlocking, didn't change anything.

Any ideas?

[Egon]

You have 1 or more cores that aren't stable. Try just unlocking 1 core at a time. If that doesn't work, then sorry, it's not going to.

[Shojin]

Unlocking cores is really hit or miss, sometimes it works, sometimes it doesn't. Try what Egon said and you might be able to get tri-core at least. If not, it's not gonna happen on your setup.

[Meresgi]

How do I go about trying to unlock 3 cores? Just put manual instead of auto and put 1 core to +0% instead of -2% like my bios has them?

[Egon]

Hmm on my BIOS, I can select how many cores I want to use. Unlock it, restart and go into the bios with it unlocked, there should be an option in there somewhere.

[Meresgi]

Would that be under the Motherboard Intelligent something or other option? M.I.T or something, where I unlock the cores. When I unlock them, it displays cores 0 through 3 at -2%. I can change that number from -12% to +12% with a +0% there too. I dont see an option that just says "Use 3 of the 4 cores"