ok guys im thinking that you dont read or something, from users manual it says where to find the options u are looking for... however this mobo its not the best to perform hard overclock, but if u have that feeling u can just do the followin.
* I recommend to load optimized settigs first.. in case you changed something before.
0-prepare for some spanglish scenes
1-acces to your bios by pressing "del" key
2-if ur using basic view change it to advanced (u can do this by clicking the button on the lower right side that says advanced mode
3-go to the tab, labeled as twikin stuff then change the multiplicator defaults its x37 (cuz the APU that its the same that your NB = to 100mhz so these numbers multiply by =3700mhz) depends how far u want to go, take care of monitoring the temps, try to get a better cooling solution, stock vent its so tiny,
4-exit saving values and thats it.. easy
for example if u up multiplex to 41 you will get 4100, u can try what works for you, and if you want more but your system freezes or something u will need to add more vcore power so chance the settings with over ride cuz mobo dont let chance that to manual, only says normal, extreme, stuff like that or 100%,110%,130% those are the patters.
you can move the NB value as well but i dont recomend that cuz this mobo its not full of solid capacitators and theres no disipators on the vrms so your mobo will b running hotter, be careful, if you do move NB frec it will change the frec on your pci express slots so you are OC your entire system, getting more chances of dmg something..
im actually on 4200mhz (mobo settings - multiplex only, no NB changes) with stock vent lol; it reachs 65°C under stress, 38°C idle but its winter so i will change that later.. trying to get some water cooling
BTW.. like someone said before u need to alow save changes for the next restart, on over ride if u want to use it, but also u need to disable turbo boost clock that way you can change the parametters,