Need help updating bios and enable uefi secure boot

Optimizing Your Older PC: BIOS Update and Enabling UEFI Secure Boot

If you’re working with an older PC configuration, such as an Intel Core i7-4790K processor paired with an ASUS Z97-A motherboard, you might encounter limitations in BIOS features and security options. This guide will help you understand the process of updating your BIOS and enabling UEFI Secure Boot to unlock advanced features and enhance security.

Understanding BIOS Updates and Accessing Advanced Settings

BIOS updates are essential for optimizing hardware performance, adding new features, and resolving bugs. In your case, you mentioned wanting to access ‘Extreme Tweaker’ options for overclocking. Often, BIOS updates can unlock hidden features or provide better access to overclocking tools.

Gathering Necessary Files and Tools

Before proceeding, ensure you have downloaded the correct BIOS firmware for your motherboard model from the official ASUS support page: ASUS Z97-A BIOS Support. It is important to verify the exact file for your motherboard model to avoid compatibility issues.

Regarding the BIOS firmware file, sometimes manufacturers provide files without an executable or renaming tools. If the downloaded BIOS file lacks a proper filename or extension, or if you encounter an issue with the update process, you might need to rename the BIOS file manually.

How to Properly Rename and Flash Your BIOS

Verify File Integrity: Ensure the BIOS file is fully downloaded and unzipped if necessary, and check for any accompanying instructions from ASUS.
Rename the BIOS File: Sometimes, the firmware download comes with a default filename. For ASUS motherboards, the BIOS file typically needs to be renamed to a specific format such as “Z97-A.CAP”. If the file isn’t named correctly:
Extract the filename (e.g., “XYZ.bin” or similar).
Rename it to “Z97-A.CAP” (or the filename specified in ASUS instructions).
Use a USB Drive for BIOS Flashing:
Format a USB drive to FAT32.
Copy the renamed BIOS file onto the drive.
Reboot your PC and enter the BIOS setup (usually by pressing Delete or F2 during startup).
Navigate to the ASUS EZ Flash utility.
Select the BIOS file from your USB drive and follow prompts to update.