: During some BIOS updates, the system may perform "Memory Retraining." This can cause a blank screen for several minutes while LED indicators (Esc, F1, F4) blink sequentially. Do not power off the device during this process.
: Under Config > Display , you can switch between Hybrid Graphics (for battery saving) and Discrete Graphics (for maximum performance in CAD/rendering). lenovo p1 gen 4 bios
: Restart your laptop and repeatedly tap the F1 or Fn+F1 key when the Lenovo logo appears. : During some BIOS updates, the system may
: 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 : During some BIOS updates