Factory defult reset for BIOS

[Mohamed-Mahdy]

i have a laptop probook 450 G4 I7-7500U 8GB Ram

i have a proplem with my network wired connection card ( Realtek)

so i went to find a solution or any option that may cause he proplem in the BIOS

i chosed the option ( apply Factory defult reset ) and choiced yes and laptop restart

first of all < the software ( Hp Sure Click ) showed a massed that it need the VT-X to be enabled

i searched on this massege and it seem to be in the Secuirety Tape in the BIOS

my first Question is : why factory rest disable this option while it was enabled since i bougth the laptop and didnt do any change in the BIOS ?

and who to reenable it agin ? and what factory reste disabled or enabled too ? ahd how to get it back to its defult to make every thing work proparly ?

my second question > i enterped the power mangment tap and i found an option called ( Deep Sleep ) and it checked on

what is this option ? as i have a question about battery drain its charge while shutdown ?

[Mohamed-Mahdy]

any help ? 😕