Bios Mods -The Best BIOS Update and Modification Source

hi i have same model, acer e1-451g
bios insydeH20 ver. v2.14 rev. 3.7
please help me to unlock advance menu,

thank you in advance and sorry my english is very bad.

hallo I have Acer E1-451g
this is the first time i heard about changing original bios to a modded one in orther to unlock advance menu.
i wanted to ask what do i need to chage my bios to modded one? what are the steps?
can any one teach me?

thanks before