Lenovo ThinkPad Edge E431 Hardware Maintenance Manual - Page 45

Hibernation mode, Symptom-to-FRU index, Shut down, Sleep, Settings, Power - ram

Page 45 highlights

• For Windows 7: Click the arrow beside the Shut down icon, and then select Sleep. To return from sleep mode, press any key. • For Windows 8: Move the cursor to the bottom-right corner of the screen to display the charms. Then click Settings ➙ Power ➙ Sleep. 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 To cause the computer to return from sleep mode and resume operation, do one of the following: • Press any key. • Open the LCD cover. • Turn on the power button. Also, in either of the following events, the computer automatically returns from sleep mode and resumes operation: • The ring indicator (RI) is signaled by a serial device or a PC Card device. • The time set on the resume timer elapses. Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few seconds before taking any action to reenter operation mode. 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 connected to the dock, do not disconnect it before resuming normal operation. If you do disconnect 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. Symptom-to-FRU index This section contains following information: • "Numeric error codes" on page 40 • "Error messages" on page 42 • "No-beep symptoms" on page 42 • "LCD-related symptoms" on page 43 • "Intermittent problems" on page 43 Chapter 4. Related service information 39

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129

For Windows 7: Click the arrow beside the
Shut down
icon, and then select
Sleep
. To return from
sleep mode, press any key.
For Windows 8: Move the cursor to the bottom-right corner of the screen to display the charms. Then
click
Settings
Power
Sleep
.
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
To cause the computer to return from sleep mode and resume operation, do one of the following:
Press any key.
Open the LCD cover.
Turn on the power button.
Also, in either of the following events, the computer automatically returns from sleep mode and resumes
operation:
The ring indicator (RI) is signaled by a serial device or a PC Card device.
The time set on the resume timer elapses.
Note:
The computer does not accept any input immediately after it enters sleep mode. Wait a few
seconds before taking any action to reenter operation mode.
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 connected to the dock, do not disconnect it
before resuming normal operation. If you do disconnect 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.
Symptom-to-FRU index
This section contains following information:
“Numeric error codes” on page 40
“Error messages” on page 42
“No-beep symptoms” on page 42
“LCD-related symptoms” on page 43
“Intermittent problems” on page 43
Chapter 4
.
Related service information
39