I apologize in advance if there is other topic about this but I really couldn't find exact answer.
I have the following configuration:
MB: ASUS M4A785D-M Pro AM3
CPU: AMD Athlon II X3 445 SKT
Power supply: 500W
Now when I start PC I have an option to press "4" on keyboard to start Asus core unlocker. After I do that PC reboots twice and then it says that 4 cores are activated, but it keeps rebooting (after POST it doesn't start Windows just stays in rebooting loop). I can go to BIOS and there it says that CPU is now "AMD Phenom II X4 B45", but since I cannot do anything I need to load default BIOS values and so it goes back to X3, that is 3 cores instead of 4.
I'm pretty new about this stuff, so I would like to ask should I also do something else in BIOS after using ASUS core unlocker utility so I can use PC and X4 or is it pretty certain to assume that 4th core is defected on this CPU and there is no way to use it?