Do yourself a little research. Google your motherboard and read the instructions on how to overclock. Generally, take the speed up by small increments without raising the voltage. Leave the clock and voltage of the ram alone. When you get your cpu clocked too high your pc will simply not start. Then go back to a slightly lesser clock speed. Then you can try raising the voltage by the smallest increments. ALWAYS MONITOR THE TEMP OF THE CPU when you do this, especially raising the voltage.