Trying to overclock CPU but all the options are greyed out..

[ex6tenz]

So I've been trying to change the CPU Ratio but it's all greyed out and I can't click it.. I've been googling a bit and seen people say I need to change cpu ratio mode to "Manual" but I can't exactly do that when that's greyed out too.
Anyone knows a solution?

Heres a picture:

 

[sizzling]

What exact motherboard and cpu do you have?

 

[ex6tenz]

Hye, I forgot to point that out. I have a MSI g45 z87 motherboard and an i5 4670K cpu. I overclocked it before, but I just re-installed windows and now its all greyed out..