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T431s, 20AA000BUS, 20AA000MUS manual Click OK
Models:
20AA
T431s
20AA000MUS
20AA000BUS
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Troubleshooting
Specifications
FAQ
Error codes
Configuring camera settings
Connecting to the network
Solving recovery problems
Using diagnostic programs
Setting up a presentation
Errors without messages
Page 164
Image 164
5.
Click the
Power Management
tab.
6.
Clear the
Allow this device to wake the computer
check box.
7.
Click
OK
.
148
User Guide
Page 163
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Image 164
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Contents
User Guide
Safety, Warranty, and Setup Guide Regulatory Notice
Contents
Replacing devices
Appendix F. EurAsia Compliance Mark
Iv User Guide
Read this first
Protect yourself from the heat that your computer generates
Prevent your computer from getting wet
Protect the cables from being damaged
Important safety information
Protect your computer and data when moving it
Handle your computer gently
Carry your computer carefully
Conditions that require immediate action
Safety guidelines
Service and upgrades
Power cords and power adapters
Plugs and outlets
Power supply statement
Extension cords and related devices
External devices
General battery notice
Built-in rechargeable battery notice
Lithium coin cell battery notice
Heat and product ventilation
Electrical current safety information
Liquid crystal display LCD notice
Using headphones or earphones
Additional safety information
Xiv User Guide
Front view
Locating computer controls, connectors, and indicators
Product overview
Power button
Camera
Microphones
Fingerprint reader on some models
Always On USB 3.0 connector
Mini DisplayPort connector
Right-side view
Fan louvers
Power connector
Ethernet connector
Left-side view
Security keyhole
Bottom view
Status indicators
Rear view
Fn Lock indicator
Speaker-mute indicator
Microphone-mute indicator
Camera status indicator
FCC ID and IC Certification information
Locating important product information
Machine type and model information
Features
Microprocessor
Memory
Storage device
Specifications
Lenovo programs
Accessing Lenovo programs on the Windows 7 operating system
Operating environment
Accessing Lenovo programs from Control Panel
Program Icon name
Accessing Lenovo programs on the Windows 8 operating system
Lenovo program overview
Lenovo Settings
Lenovo Solution Center
Password Manager
Power Manager
System Update
Using your computer
Frequently asked questions
Registering your computer
Can I get my user guide in another language?
How do I attach or replace a device?
How can I use the battery power more effectively?
Is getting connected in different locations a challenge?
Special keys
Function keys
Using the ThinkPad pointing device
Windows key
Customizing the ThinkPad pointing device
Changing the cap
Power management
Checking the battery status
Using the ac power adapter
Charging the battery
Maximizing the battery life
Connecting the ac power adapter
Managing the battery power
Power-saving modes
Select Power off display Sleep
Hibernation
Connecting to the network
Click Administrative Tools
Click the Global Power Settings tab
Ethernet connections
Wireless connections
Wireless LAN
Tips for using the wireless LAN feature
Wireless WAN
Establishing a wireless connection
Using Bluetooth
Bluetooth
Click Hardware and Sound Click Devices and Printers
Checking the wireless network connection status
Select Send To Bluetooth Devices
Access Connections gauge
Access Connections status icon
Access Connections wireless status icon
Using an external monitor
Enabling or disabling the wireless features
Set Resolution Click Advanced Settings
Connecting an external monitor
Setting the monitor type
Changing display settings
Using the Extend desktop function
Considerations for using the Extend desktop function
Considerations for attaching an external monitor
Setting up a presentation
Using audio features
Using the camera
Configuring for sound recording
Configuring camera settings
Then click Hardware and Sound Realtek HD Audio Manager
Removing a media card
Using a media card
Inserting a media card
Ergonomic information
Accessibility and comfort
You and your computer
Accessibility information
Comfort
Traveling with your computer
Travel tips
Assistive technologies
Screen-reader technologies
Travel accessories
Using passwords
Passwords and sleep mode
Typing passwords
Security
Power-on password
Hard disk passwords
Setting a power-on password
Select Power-on Password
Setting a hard disk password
Select Hard Disk 1 Password or Hard Disk 2 Password
Supervisor password
Changing or removing a hard disk password
Setting, changing, or removing a supervisor password
Select Supervisor Password
Using Windows BitLocker Drive Encryption
Hard disk security
Encryption
Setting the security chip
Setting the security chip
Swiping your finger over the reader
Using the fingerprint reader
Enrolling your fingerprint
Maintaining the fingerprint reader
Using firewalls
Protecting data against viruses
Security
User Guide
Recovery overview
Recovery overview for the Windows 7 operating system
Creating and using a recovery media
Creating recovery media
Performing backup and recovery operations
Performing a backup operation
Using the Rescue and Recovery workspace
Performing a recovery operation
Click the Restore your system from a backup icon
Rescue files from your hard disk drive or from a backup
Creating a rescue medium
Creating and using a rescue medium
Using a rescue medium
Reinstalling preinstalled programs and device drivers
Solving recovery problems
Reinstalling preinstalled programs
Reinstalling preinstalled device drivers
Recovery overview for the Windows 8 operating system
Resetting your computer to the factory default settings
Refreshing your computer
Advanced startup options
Recovery overview
User Guide
Disabling the built-in battery
Select Disable Built-in Battery
Replacing devices
Static electricity prevention
Installing or replacing the SIM card
Replacing the base cover assembly
Replacing the hard disk drive or solid-state drive
Replacing devices
Replacing a memory module
Replacing an M.2 wireless LAN card
User Guide
Replacing devices
Replacing an M.2 wireless WAN card
Replacing devices
User Guide
Replacing the backup battery
Replacing the keyboard
Replacing devices
User Guide
Replacing devices
User Guide
Replacing devices
User Guide
ThinkPad port replicators and docking stations
Enhancing your computer
Finding ThinkPad options
Front view
Enhancing your computer
Power connector Connect the ac power adapter
Enhancing your computer
Attaching a ThinkPad port replicator or docking station
Enhancing your computer
Detaching a ThinkPad port replicator or docking station
Security feature
Using the system lock key
Before you begin
Advanced configuration
Installing a new operating system
Installing the Windows 7 operating system
Select UEFI/Legacy Boot
Installing the registry patches for Windows
Installing the Windows 7 fix modules
Installing the Windows 8 operating system
Installing the driver for USB 3.0 for Windows
Select Startup Boot
Installing the Windows 8 fix modules
Installing other drivers and software for Windows
ThinkPad Setup
Click Change display settings Click Advanced Settings
Click Properties
Config menu
Main menu
Menu item Submenu item Value Comments Network
USB
Keyboard/Mouse
Maximize Performance
Ahci
Date and Time menu
Security menu
Menu item Submenu item Value Comments Password
Bios ROM
Uefi Bios
Standard Mode
Startup menu
Changing the startup sequence
Network Boot
Restart menu
System management
Updating your system Uefi Bios
Using system management
Asset ID Eeprom
Setting management features
Network Boot sequence
Flash update
109
Preventing problems
General tips for preventing problems
Getting the latest drivers from the Web site
Getting the latest drivers using System Update
Making sure device drivers are current
Be careful about where and how you work
Taking care of your computer
Be gentle with your computer
Carry your computer properly
Cleaning the cover of your computer
Take care in setting passwords
Care for the fingerprint reader
Register your computer Be sure not to modify your computer
Cleaning your computer keyboard
Cleaning your computer display
User Guide
Troubleshooting computer problems
Diagnosing problems
Troubleshooting
Computer stops responding
If you spill something on your computer
Error messages
Spills on the keyboard
Troubleshooting computer problems
Errors without messages
Beep errors
Memory module problems
Solution
Networking problems
Ethernet problems
Problems with the keyboard and other pointing devices
Wireless LAN problem
Wireless WAN problem
Bluetooth problems
Problems with the display and multimedia devices
Keyboard problems
Computer screen problems
Click Keyboard
External monitor problems
Click Advanced Settings
Click Advanced Settings
Set Resolution
Double-clickSound, video and game controllers
Audio problems
Click Hardware and Sound
Battery problems
Fingerprint reader problems
Battery and power problems
An ac power adapter problem
Power problems
Sleep and hibernation problems
Power button problem
Boot problems
Problems with drives and other storage devices
Hard disk drive problems
Software problem
Problems with ports and connectors
Solid-state drive problem
USB problem
User Guide
Getting support
Before you contact Lenovo
Getting help and service
Using diagnostic programs
Lenovo Support Web site
Calling Lenovo
Purchasing additional services
Telephone numbers
User Guide
Wireless related information
Wireless interoperability
Appendix A. Regulatory information
137
Locations of the UltraConnect wireless antennas
Usage environment and your health
Locating wireless regulatory notices
Export classification notice
Electronic emission notices
Federal Communications Commission Declaration of Conformity
German Class B compliance statement
Appendix A. Regulatory information
User Guide
Appendix B. Weee and recycling statements
Important Weee information
Japan recycling statements
143
Disposing of Lenovo computer components
Battery recycling information for the European Union
Recycling information for Brazil
Appendix B. Weee and recycling statements
User Guide
147
Appendix C. Energy Star model information
Click Hardware and Sound Device Manager
Click OK
Appendix D. Notices
149
Trademarks
151
China RoHS Turkish RoHS
Ukraine RoHS
India RoHS
Appendix F. EurAsia Compliance Mark
153
User Guide
Page
Part Number 1P P/N