(i hope that image came out alright)
above is a jumper(duh) because i dont have your exact motherboard your(but i have done this before) your going to need to find a three pronged jumper setting that says "over_volt"
on it. you need to take it and move the jumper over one prong.
ex(11 is the jumper and 0 is the unused prong)110 then change
it to 011(note: it may be the other way around)
i really hope that helped and was explained well. also if you bought the motherboard seprate it should have come whith the manual that explains everything.