Lenovo K23 User Manual page 35

Mute button
Mute/Unmute the computer.
Custom button
Under Windows operating systems, press this button to launch a self-
defined program, file or a Web site.
Note: To re-define the Custom button, select Self-defined program setting
(start → All Programs → Lenovo → Energy Management → Self-defined
program setting).
OneKey Rescue System button
• When the computer is powered-off, press this button to enter the
OneKey Rescue System if Lenovo OneKey Rescue System has been
preinstalled.
• Under Windows operating systems, press this button to start Lenovo
OneKey Recovery.
Note: For details, see "OneKey Rescue System" on page 36.
Chapter 2. Learning the basics
21