Keyboard Functions Key Combination Purpose Runs System Setup. Displays battery fuel gauge. Note that battery must be characterized for the fuel gauge to operate. See CMOS Setup. Activates Turbo Mode. All power conservation features are disabled for ten minutes. Display toggle. Switches from LCD to External Display to Simultaneous Display. Reverses display on monochrome LCD. Press during boot for a complete POST RAM test. RAM test is normally skipped for faster boot process. Password-locks the keyboard. A password must be entered in setup to enable this feature. Expanded text on LCD. Toggle keyboard mouse mode. Arrows move mouse cursor, Z and X act as mouse buttons. Pause key. Break key. SysRq key. ScrLk key. Move mouse cursor. Locks arrows into mouse mode. Left mouse key. Right mouse key. See Embedded Keypad