: Restart your laptop and repeatedly tap the F1 or Fn+F1 key when the Lenovo logo appears.

To enter the BIOS setup utility, follow these primary methods:

: You can save your preferred settings as Custom Defaults under the Restart menu, allowing you to restore them easily without resetting to factory values. How to Update the BIOS ThinkPad X1 Extreme Gen 4 / P1 Gen 4 User Guide - Lenovo

: Power on the system and press Enter immediately to pause the boot process. A menu will appear; press F1 to enter the BIOS.

The ThinkPad P1 Gen 4 BIOS offers several critical configurations for power users: