How to unlock secret debug bios setup and secret bios menu in lenovo g580

[Lenovo g580] This video will teach you how to unlock secret debug bios and secret bios menu to unlock various hidden options. History : I purchased this laptop in 2014 and using it till now 2021. In this whole period of time i accidentally entered in secret bios setup just 2 times.I was searching and looking for information on internet how to unlock it but was not able to find any thing. After a long search and hit and trial method i was able to unlock these option. So i am presenting this information to public so it might help g580 owners to unlock their laptops up-to their full potential.