Are you saying you cannot access the CPU tuning section?
Note that this is not an unlocked CPU, so you will not be able to change the CPU multiplier. The only way to OC an Athlon II is by changing the system base clock (default of 200MHz). This will affect all components on your board though, not just the CPU.
Yes, that is what i'm saying, and that's perfectly fine with me, if i have to change the base clock ( the default 200Mhz ) but it won't let me go into that ( by pressing Enter ) to change the value