Sleep Mode; Hibernation Mode - Lenovo ThinkPad T450s Maintenance Manual

To put the computer into screen blank mode, do the following:
1. Right-click the battery gauge on the taskbar.
2. Select Power off display.
To end screen blank mode and resume normal operation, press any key.

Sleep mode

When the computer enters sleep mode, the following events occur in addition to what occurs in screen
blank mode:
• The LCD is powered off.
• The hard disk drive or solid-state drive is powered off.
• The microprocessor stops.
To put your computer into sleep mode, press Fn+4 or do the following:
• For Windows 7: Open the Start menu, then click the arrow next to the Shut down button. Click Sleep
from the menu displayed.
• For Windows 8: Move the pointer to the bottom-right corner of the screen to display the charms. Then
click Settings ➙ Power ➙ Sleep.
• For Windows 8.1: Go to the Start screen and click the power icon
• For Windows 10: Open the Start menu and , click
To return to normal operation, press the Fn key only.
In certain circumstances, the computer goes into sleep mode automatically:
• After a period of inactivity specified in power plan settings
• When the battery power is low

Hibernation mode

In hibernation mode, the following occurs:
• The system status, RAM, VRAM, and setup data are stored on the hard disk drive or solid-state drive.
• The system is powered off.
Note: If the computer enters the hibernation mode while it is docked to the docking station or the port
replicator, do not undock it before resuming normal operation. If you do undock it and then try to resume
normal operation, you will get an error message, and you will have to restart the system.
If you have defined one of the following actions as the event that causes the system to go into hibernation
mode, perform that action.
• Closing the lid.
• Pressing the power button.
Also, the computer goes into hibernation mode automatically after a period of inactivity specified in power
plan settings.
When the power is turned on, the computer returns from hibernation mode and resumes operation. The
hibernation file in the boot record on the hard disk drive or solid-state drive is read, and system status is
restored from the hard disk drive or solid-state drive.
, then click Sleep.
Power, and then click Sleep.
.
Chapter 4 Related service information
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