HP Prodesk 600 unlock hidden bios advanced overclock settings?

[lolvatveo]

Hi, I'm using an HP Prodesk 600 with an i3 4130 and it seems to be the bottleneck in gaming, I want to push it up a notch for like shooting games. I know oem pcs won't have overclocking options, but i think hp is the exception. They may have hidden overclocking options, I saw a video on youtube a guy unlocked the overclocking settings for a socket 775 mobo on a hp computer, I think pc systems before intel 6th gen cpu still have the overclocking option pulse in bios. So how to unlock advance settings on hp or I need a modded bios? By default in advance tab doesn't have any voltage or overclocking options, please help