Modern "Graphical Mode" can feel slightly slower than the "Simple Text Mode."

After the reboot, select > Advanced options > UEFI Firmware Settings . Click Restart to boot directly into the BIOS. 2. Key BIOS Features and Settings to Configure

If you miss the window and Windows begins to load, restart the machine and try again. Method 2: The Boot Menu Shortcut

If you are having trouble updating, I can help walk you through the manual BIOS flash process using a USB drive, or help troubleshoot a specific error code. ThinkPad X1 Extreme Gen 4 / P1 Gen 4 User Guide - Lenovo

The is the low-level software that initializes your hardware before the operating system boots. Getting it right can mean the difference between a stable, cool, high-performance workstation and a laptop plagued by thermal throttling, fan noise, or boot failures.

If you install a secondary M.2 NVMe SSD and it is missing from your OS installation screen.