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Lenovo ThinkPad Edge E420s (English) User Guide - Page 159

Battery and power, Battery problems - charger

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If your finger has any of the following conditions, you may not be able to register or authenticate it: - Your finger is wrinkled. - Your finger is rough, dry, or injured. - Your finger is very dry. - Your finger is stained with dirt, mud, or oil. - The surface of your finger is very different from when you enrolled your fingerprint. - Your finger is wet. - A finger is used that has not been enrolled. To improve the situation, try the following: - Clean or wipe your hands to remove any excess dirt or moisture from the fingers. - Enroll and use a different finger for authentication. - If your hands are too dry, apply lotion to them. Battery and power This section tells what to do if you have a battery and power problem. This section includes five topics: battery, ac power adapter, power, power button, startup and sleep (standby) and hibernation. Check these topics to find the related information. Battery problems • Problem: The battery pack cannot be fully charged by the power-off method in the standard charge time for your computer. Solution: The battery pack might be over-discharged. Do the following: 1. Turn off the computer. 2. Connect the ac power adapter to the computer and let it charge. If the optional Quick Charger is available, use it to charge the over-discharged battery pack. If the battery pack cannot be fully charged in 24 hours, call Customer Support Center. • Problem: Your computer shuts down before the battery status indicator shows empty, -or- Your computer operates after the battery status indicator shows empty. Solution: Discharge and recharge the battery pack. • Problem: The operating time for a fully charged battery pack is short. Solution: Discharge and recharge the battery pack. If your battery's operating time is still short, call Customer Support Center. • Problem: The computer does not operate with a fully charged battery pack. Solution: The surge protector in the battery pack might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again. • Problem: The battery pack cannot be charged. Solution: You cannot charge the battery when it is too hot. If the battery feels hot, detach ac power adapter, leave computer turned off and allow it to cool to room temperature. After it cools, recharge the battery. If it still cannot be charged, have it serviced. Chapter 10. Troubleshooting computer problems 141

Section	Page
Read this first	7
Important safety information	8
Conditions that require immediate action	9
Safety guidelines	9
Chapter 1. Product Overview	19
Locating computer controls, connectors, and indicators	19
Front view	20
Right-side view	22
Left-side view	24
Bottom view	25
Rear view	26
Status indicators	27
Locating important product information	29
Machine type and model label	30
FCC ID and IC Certification number label	30
Certificate of Authenticity label	31
Features	32
Specifications	33
Operating environment	33
ThinkVantage technologies and software	34
Accessing applications in Windows 7	35
Access Connections	36
Active Protection System	36
Fingerprint Software	36
Lenovo ThinkVantage Tools	37
Lenovo ThinkVantage Toolbox	37
Message Center Plus	37
Password Manager	37
Power Manager	38
Product Recovery	38
Presentation Director	38
Rescue and Recovery	38
System Update	38
ThinkVantage GPS	39
Chapter 2. Using your computer	41
Registering your computer	41
Frequently asked questions	41
Special keys and buttons	43
Function keys	43
The Windows key and the Application key	45
Using the UltraNav pointing device	45
Using the TrackPoint pointing device	46
Using the touch pad	47
Behavior of the UltraNav and an external mouse	48
Adding the UltraNav icon to the system tray	48
Power management	49
Checking battery status	49
Using the ac power adapter	49
Charging the battery	50
Maximizing battery life	50
Power-saving modes	50
Connecting to the network	52
Ethernet connections	52
Wireless connections	52
Using a projector or external display	60
Changing display settings	60
Attaching an external monitor	60
Setting up a presentation	63
Using a color profile	63
Using audio features	63
Using an integrated camera	64
Using dual displays	65
Using the AMD PX 4.0 Dynamic Switchable Graphics feature	66
Using the ThinkLight feature	66
Using the optical drive	67
Using the media card reader	67
Chapter 3. You and your computer	69
Accessibility and comfort	69
Ergonomic information	69
Adjusting your computer to fit you	70
Accessibility information	71
Traveling with your computer	71
Travel tips	72
Travel accessories	72
Chapter 4. Security	73
Attaching a mechanical lock	73
Using passwords	73
Passwords and sleep (standby) mode	74
Power-on password	74
Hard disk passwords	75
Supervisor password	77
Hard disk security	79
Using a fingerprint reader	79
Notice on deleting data from your hard disk drive or solid state drive	81
Using and understanding firewalls	82
Protecting data against viruses	82
Chapter 5. Recovery overview	85
Creating and using recovery media	85
Creating recovery media	86
Using recovery media	86
Performing backup and recovery operations	87
Performing a backup operation	87
Performing a recovery operation	87
Using the Rescue and Recovery workspace	88
Creating and using a rescue medium	89
Creating a rescue medium	89
Using a rescue medium	89
Reinstalling preinstalled applications and device drivers	90
Solving recovery problems	91
Chapter 6. Replacing devices	93
Static electricity prevention	93
Before replacing CRU	93
Replacing the solid state drive or hard disk drive	94
Replacing the keyboard	96
Replacing memory	100
Installing and replacing the mSATA solid state drive	102
Installing and replacing the PCI Express Mini Card for wireless LAN/WiMAX connection	104
Installing and replacing the PCI Express Mini Card for wireless WAN connection	107
Replacing the SIM card	109
Chapter 7. Enhancing your computer	113
Finding ThinkPad options	113
Using a flash media card	113
Chapter 8. Advanced configuration	115
Installing a new operating system	115
Before you begin	115
Installing Windows 7	116
Installing Windows XP	117
Installing device drivers	119
Installing ThinkPad Monitor File for Windows 2000/XP/Vista/7	119
Installing Intel Chipset Support for Windows 2000/XP/Vista/7	120
Installing drivers and software	120
ThinkPad Setup	121
Config menu	121
Date and time menu	122
Security menu	122
Startup menu	123
Restart menu	124
ThinkPad Setup items	125
Updating your system UEFI BIOS	132
Using system management	133
System management	133
Setting management features	133
Chapter 9. Preventing problems	135
General tips for preventing problems	135
Making sure device drivers are current	136
Getting the latest drivers from the Web site	136
Getting the latest drivers using System Update	136
Taking care of your computer	137
Cleaning the cover of your computer	138
Chapter 10. Troubleshooting computer problems	141
Diagnosing programs	141
Using Lenovo ThinkVantage Toolbox	141
Troubleshooting	141
Computer stops responding	141
Spills on the keyboard	142
Error messages	142
Errors without messages	144
Beep errors	145
Memory problems	145
Networking	146
Keyboard and other pointing devices	150
Display and multimedia devices	151
Fingerprint reader problems	158
Battery and power	159
Drives and other storage devices	162
Software problems	164
Ports and connectors	164
Universal Serial Bus problems	164
Chapter 11. Getting support	167
Before you contact Lenovo	167
Register your computer	167
Download system updates	167
Record information	167
Getting help and service	168
Using diagnostic programs	168
Lenovo Support Web site	168
Calling Lenovo	169
Purchasing additional services	172
Appendix A. Regulatory information	175
Wireless related information	175
Location of the UltraConnect wireless antennas	176
Locating wireless regulatory notices	177
Export classification notice	178
Electronic emission notices	178
Federal Communications Commission Declaration of Conformity	178
Industry Canada Class B emission compliance statement	178
European Union - Compliance to the Electromagnetic Compatibility Directive	179
German Class B compliance statement	179
Korea Class B compliance statement	179
Japanese VCCI Class B statement	180
Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase	180
Lenovo product service information for Taiwan	180
Additional regulatory information	180
Appendix B. WEEE and recycling statements	181
EU WEEE statements	181
Japan recycling statements	181
Appendix C. Notices	183

Match case Limit results 1 per page

If your ﬁnger has any of the following conditions, you may not be able to register or authenticate it:

–

Your ﬁnger is wrinkled.

–

Your ﬁnger is rough, dry, or injured.

–

Your ﬁnger is very dry.

–

Your ﬁnger is stained with dirt, mud, or oil.

–

The surface of your ﬁnger is very different from when you enrolled your ﬁngerprint.

–

Your ﬁnger is wet.

–

A ﬁnger is used that has not been enrolled.

To improve the situation, try the following:

–

Clean or wipe your hands to remove any excess dirt or moisture from the ﬁngers.

–

Enroll and use a different ﬁnger for authentication.

–

If your hands are too dry, apply lotion to them.

Battery and power

This section tells what to do if you have a battery and power problem.

This section includes ﬁve topics: battery, ac power adapter, power, power button, startup and sleep

(standby) and hibernation. Check these topics to ﬁnd the related information.

Battery problems

•

Problem

: The battery pack cannot be fully charged by the power-off method in the standard charge

time for your computer.

Solution

: The battery pack might be over-discharged. Do the following:

1. Turn off the computer.

2. Connect the ac power adapter to the computer and let it charge.

If the optional Quick Charger is available, use it to charge the over-discharged battery pack.

If the battery pack cannot be fully charged in 24 hours, call Customer Support Center.

•

Problem

: Your computer shuts down before the battery status indicator shows empty,

-or-

Your

computer operates after the battery status indicator shows empty.

Solution

: Discharge and recharge the battery pack.

•

Problem

: The operating time for a fully charged battery pack is short.

Solution

: Discharge and recharge the battery pack. If your battery's operating time is still short, call

Customer Support Center.

•

Problem

: The computer does not operate with a fully charged battery pack.

Solution

: The surge protector in the battery pack might be active. Turn off the computer for one minute to

reset the protector; then turn on the computer again.

•

Problem

: The battery pack cannot be charged.

Solution

: You cannot charge the battery when it is too hot. If the battery feels hot, detach ac power

adapter, leave computer turned off and allow it to cool to room temperature. After it cools, recharge the

battery. If it still cannot be charged, have it serviced.

Chapter 10

Troubleshooting computer problems

141