Sorry to step in… just a note, usually (…not always, can work after the parent menu unlocked) changing the Default and Optimal values can lead to a bricked bios and system hanging on boot with black screen.
On AMI Aptio IV core bioses, the results produced with AMIBCP can be achieved changing the Access value to USER instead of Default on the parent menus that are not visible, not the strings itself.
Ex:
Advanced visible, PCIe not visible, so in Advanced the string access of the PCIe is now set to USER, doing this usually all the strings followed should be visible now.
As last resource option after this new menus are visible if any desired string is not yet visible, the same string Access value should be changed to USER.
This operation, depending on bios/motherboard version has its risks and the user should take precautions and ensure the correct method of recovery a bricked system.
If its AMI Aptio V cores bios, AMIBCP is usually not valid as in IV, other methods required:
ASUS R4E Cpu clock gen filter does not appear in bios - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)