Help with a no-Brand 10.1" A20 dualcore tab topic

Hi all,

My kid just locked my android tablet.
its a 10.1" A20 dualcore tab. running 4.2.2
it has few buttons: VOL+ / VOL- / back / PWR
also a small hole with a reset button there

can anyone guide me in to the recovery mode so i can wipe it out?

:confused: