v Open the LCD cover.v Turn on the power switch.Also, in either of the following events, the computerautomatically returns from standby mode and resumesoperation:v The ring indicator (RI) is signaled by a serial device or aPC Card device.v The time set on the resume timer elapses.Note: The computer does not accept any inputimmediately after it enters standby mode. Wait afew seconds before taking any action to reenteroperation mode.Hibernation modeIn hibernation mode, the following occurs:v The system status, RAM, VRAM, and setup data arestored on the hard disk.v The system is powered off.Note: If the computer enters the hibernation mode while itis docked to the docking station, do not undock itbefore resuming normal operation. If you do undockit and then try to resume normal operation, you willget an error message, and you will have to restartthe system.To cause the computer to enter hibernation mode, do anyof the following:v Press the Fn+F12 keys.v If you are using the ACPI operating system and havedefined one of the following actions as the event thatcauses the system to go into hibernation mode, performthat action.– Closing the lid.– Pressing the power button.– Pressing Fn+F4 keys.Also, the computer goes into hibernation modeautomatically in either of the following conditions:v If a “hibernation time” has been set on the timer, and ifthe user does not do any operation with the keyboard,the TrackPoint, the hard disk drive, the parallelconnector, or the diskette drive within that time.v If the timer conditions are satisfied in suspend mode.When the power is turned on, the computer returns fromhibernation mode and resumes operation. The hibernationfile in the boot record on the hard disk drive is read, andsystem status is restored from the hard disk drive.Related service informationGeneral descriptions 33