To enable USB 3.0 in BIOS, follow these operational steps: Turn on your computer and press the key to access the BIOS setup utility. This key varies depending on your computer manufacturer and model but is typically displayed on the boot screen. Navigate to the 'Advanced' or 'Integrated Peripherals' section of the BIOS menu using the arrow keys. Look for an option called 'USB 3.0 Controller' or 'xHCI Controller' and enable it. Make sure to save your changes before exiting the BIOS. Restart your computer and check if the USB 3.0 ports are now working. If they are still not working, ensure your USB 3.0 drivers are installed and up to date.