Lenovo THINKPAD X1 Tablet Gen 3 Hardware Maintenance Manual page 87

After the system board is replaced with a new one, initialize the settings on the new system board by doing
the following:
1. Restart the computer. When the logo screen is displayed, tap To interrupt normal startup, press Enter
or tap here on the screen.
2. Tap F1 on the screen to start the ThinkPad Tablet Setup program.
3. Tap Restart ➙ Load Setup Defaults.
4. A confirmation message is displayed. Tap Yes to load the default configuration.
.
Chapter 7 Removing or replacing a FRU
81