Home » Lenovo Manuals » Laptops » Lenovo ThinkPad Edge E135 » Manual Viewer

Lenovo ThinkPad Edge E135 (English) User Guide - Page 133

Battery and power problems, Battery problems, An ac power adapter problem

View all Lenovo ThinkPad Edge E135 manuals

Add to My Manuals
Save this manual to your list of manuals

Page 133 highlights

• Problem: There is no volume control for MIDI sound in the Volume Mixer window. Solution: Use the hardware volume control. This is because the built-in synthesizer software does not support the control. • Problem: The sound cannot be turned off completely even if you set the Master volume control at minimum. Solution: You still can hear some sound even though you have set the Master volume control at minimum. To turn off the sound completely, go to the Master volume control and select Mute speakers. • Problem: When you connect a headphone to your computer while playing sound, a speaker does not produce sound. Solution: Once the headphone is attached, the streaming is automatically redirected to it. If you want to listen to sound from the speakers again, be sure to set those speakers as the default device. For details, refer to the help information system for Realtek HD Audio. Battery and power problems This topic contains instructions on troubleshooting battery and power problems. Battery problems • Problem: The battery pack cannot be fully charged in the standard charge time when the computer is powered off. Solution: The battery pack might be over-discharged. Do the following: 1. Turn off the computer. 2. Make sure that the over-discharged battery pack is in the computer. 3. Connect the ac power adapter to the computer and let it charge. If a quick charger is available, use it to charge the over-discharged battery pack. If the battery pack cannot be fully charged in 24 hours, use a new battery pack. • 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 operating time is still short, use a new battery pack. • 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, remove it from the computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced. An ac power adapter problem Problem: The ac power adapter is connected to the computer and the working electrical outlet, but the power adapter (power plug) icon is not displayed on the taskbar. Also the ac power indicator does not light up. Chapter 9. Troubleshooting computer problems 117

Section	Page
Read this first	7
Important safety information	8
Conditions that require immediate action	9
Safety guidelines	9
Chapter 1. Product overview	17
Locating computer controls, connectors, and indicators	17
Front view	17
Right-side view	19
Left-side view	20
Bottom view	21
Status indicators	22
Locating important product information	24
Machine type and model label	24
FCC ID and IC Certification number label	25
Certificate of Authenticity label	26
Features	26
Specifications	27
Operating environment	28
ThinkVantage programs	28
Accessing ThinkVantage programs on the Windows 7 operating system	28
Introduction to ThinkVantage programs	30
Chapter 2. Using your computer	33
Registering your computer	33
Frequently asked questions	33
Special keys and buttons	34
Using the UltraNav pointing device	37
Using the TrackPoint pointing device	37
Using the touch pad	39
Disabling the UltraNav pointing device and using an external mouse	40
Adding the UltraNav icon to the Windows notification area	40
Power management	40
Checking the battery status	40
Using the ac power adapter	41
Charging the battery	41
Maximizing the battery life	41
Managing the battery power	42
Power-saving modes	42
Handling the battery	43
Connecting to the network	45
Ethernet connections	45
Wireless connections	45
Presentations and multimedia	49
Changing display settings	49
Connecting a projector or an external monitor	49
Using dual displays	51
Using audio features	52
Using the integrated camera	52
Using a flash media card	53
Inserting a flash media card	53
Removing a flash media card	54
Chapter 3. You and your computer	55
Accessibility and comfort	55
Ergonomic information	55
Comfort	56
Accessibility information	56
Traveling with your computer	57
Travel tips	57
Travel accessories	57
Chapter 4. Security	59
Attaching a mechanical lock	59
Using passwords	59
Passwords and sleep mode	59
Typing passwords	59
Power-on password	60
Hard disk passwords	60
Supervisor password	62
Hard disk security	64
Notice on deleting data from your hard disk drive or solid state drive	64
Using firewalls	65
Protecting data against viruses	65
Chapter 5. Recovery overview	67
Creating and using a recovery media	67
Performing backup and recovery operations	68
Using the OneKey Recovery Pro workspace	69
Creating and using a rescue medium	70
Reinstalling preinstalled applications and device drivers	71
Solving recovery problems	72
Chapter 6. Replacing devices	73
Static electricity prevention	73
Replacing the battery	73
Replacing the SIM card	75
Replacing the hard disk drive or solid state drive	77
Replacing a PCI Express Mini Card for wireless LAN/WiMAX connection	80
Replacing a PCI Express Half Mini Card for wireless WAN connection	82
Replacing a memory module	86
Replacing the keyboard	88
Replacing the backup battery	93
Chapter 7. Advanced configuration	97
Installing a new operating system	97
Before you begin	97
Installing the Windows 7 operating system	98
Installing device drivers	99
Installing the driver for the 4-in-1 media card reader	99
Installing the driver for USB 3.0	99
Installing the ThinkPad monitor file for Windows 2000/XP/Vista/7	99
Installing other drivers and software	100
ThinkPad Setup	100
Main menu	100
Config menu	101
Date/Time menu	106
Security menu	106
Startup menu	110
Restart menu	112
Updating your system UEFI BIOS	112
Using system management	113
System management	113
Setting management features	113
Chapter 8. Preventing problems	115
General tips for preventing problems	115
Making sure device drivers are current	116
Taking care of your computer	117
Cleaning the cover of your computer	118
Chapter 9. Troubleshooting computer problems	121
Diagnosing problems	121
Troubleshooting	121
Computer stops responding	121
Spills on the keyboard	122
Error messages	122
Errors without messages	124
Beep errors	125
Memory module problems	125
Networking problems	126
Problems with the keyboard and other pointing devices	127
Problems with the display and multimedia devices	128
Battery and power problems	133
Problems with drives and other storage devices	136
A software problem	136
Problems with ports and connectors	137
Chapter 10. Getting support	139
Before you contact Lenovo	139
Getting help and service	139
Using diagnostic programs	140
Lenovo Support Web site	140
Calling Lenovo	140
Finding ThinkPad options	141
Purchasing additional services	141
Appendix A. Regulatory information	143
Wireless related information	143
Location of the UltraConnect wireless antennas	144
Locating wireless regulatory notices	145
Export classification notice	145
Electronic emission notices	145
Federal Communications Commission Declaration of Conformity	145
Industry Canada Class B emission compliance statement	146
European Union - Compliance to the Electromagnetic Compatibility Directive	146
German Class B compliance statement	146
Korea Class B compliance statement	147
Japan VCCI Class B compliance statement	147
Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase	147
Lenovo product service information for Taiwan	147
Appendix B. WEEE and recycling statements	149
EU WEEE statements	149
Japan recycling statements	149
Recycling information for Brazil	150
Battery recycling information for the European Union	150
Battery recycling information for Taiwan	151
Battery recycling information for the United States and Canada	151
Appendix C. ENERGY STAR model information	153
Appendix D. Notices	155

Match case Limit results 1 per page

•

Problem

: There is no volume control for MIDI sound in the Volume Mixer window.

Solution

: Use the hardware volume control. This is because the built-in synthesizer software does

not support the control.

•

Problem

: The sound cannot be turned off completely even if you set the Master volume control at

minimum.

Solution

: You still can hear some sound even though you have set the Master volume control at minimum.

To turn off the sound completely, go to the Master volume control and select

Mute speakers

•

Problem

: When you connect a headphone to your computer while playing sound, a speaker does not

produce sound.

Solution

: Once the headphone is attached, the streaming is automatically redirected to it. If you want to

listen to sound from the speakers again, be sure to set those speakers as the default device. For details,

refer to the help information system for Realtek HD Audio.

Battery and power problems

This topic contains instructions on troubleshooting battery and power problems.

Battery problems

•

Problem

: The battery pack cannot be fully charged in the standard charge time when the computer is

powered off.

Solution

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

1. Turn off the computer.

2. Make sure that the over-discharged battery pack is in the computer.

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

If a quick charger is available, use it to charge the over-discharged battery pack.

If the battery pack cannot be fully charged in 24 hours, use a new battery pack.

•

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 operating time is still short, use a

new battery pack.

•

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, remove it from the

computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it

still cannot be charged, have it serviced.

An ac power adapter problem

Problem

: The ac power adapter is connected to the computer and the working electrical outlet, but the

power adapter (power plug) icon is not displayed on the taskbar. Also the ac power indicator does not

light up.

Chapter 9

Troubleshooting computer problems

117