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Lenovo ThinkPad T540p (English) User Guide - Page 159

A power button problem, Boot problems, Sleep and hibernation problems

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If your computer is getting no power at all, check the following items: 1. Verify the power button. The power button is illuminated whenever the computer is on. 2. Check all power connections. Remove any power strips and surge protectors to connect the ac power adapter directly to the ac power outlet. 3. Inspect the ac power adapter. Check for any physical damage, and make sure that the power cable is firmly attached to the adapter brick and the computer. 4. Verify the ac power source is working by attaching another device to the outlet. If your computer does not run on battery power, check the following items: 1. Remove and reinstall the battery to make sure that it is properly connected. 2. If the battery runs out of power, attach ac power adapter to recharge the battery. 3. If the battery is charged but the computer does not run, replace the battery with a new one. A power button problem Problem: The system does not respond, and you cannot turn off the computer. Solution: Turn off the computer by pressing and holding the power button for 4 seconds or more. If the computer is still not reset, remove the ac power adapter and the battery. Boot problems Print these instructions now and keep them with your computer for reference later. If you receive an error message before the operating system loads, follow the appropriate corrective actions for power-on self-test (POST) error messages. If you receive an error message while the operating system is loading the desktop configuration after the POST is completed, check the following items: 1. Go to the Lenovo Support Web site at http://www.lenovo.com/support and search for the error message. 2. Go to the Microsoft Knowledge Base homepage at http://support.microsoft.com/ and search for the error message. Sleep and hibernation problems • Problem: The computer enters sleep mode unexpectedly. Solution: If the microprocessor overheats, the computer automatically enters sleep mode to allow the computer to cool and to protect the microprocessor and other internal components. Check the settings for sleep mode. • Problem: The computer enters sleep mode immediately after the power-on self-test. Solution: Ensure that: - The battery is charged. - The operating temperature is within the acceptable range. Refer to "Operating environment" on page 13. If the battery is charged and the temperature is within range, have the computer serviced. • Problem: A critical low-battery error occurs, and the computer immediately turns off. Solution: The battery power is getting low. Plug the ac power adapter into an electrical outlet and connect the ac power adapter to the computer, or replace the battery with a charged one. Chapter 10. Troubleshooting computer problems 143

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	22
Rear view	23
Status indicators	23
Locating important product information	25
Machine type and model	25
FCC ID and IC Certification number	25
Certificate of Authenticity	26
Genuine Microsoft label	27
Features	27
Specifications	29
Operating environment	29
Lenovo programs	30
Accessing Lenovo programs on the Windows 7 operating system	30
Accessing Lenovo programs on the Windows 8 or Windows 8.1 operating system	32
Lenovo programs overview	33
Chapter 2. Using your computer	35
Registering your computer	35
Frequently asked questions	35
Special keys	37
Using the ThinkPad pointing device	39
Power management	40
Checking the battery status	41
Using the ac power adapter	41
Charging the battery	42
Maximizing the battery life	42
Managing the power plans	42
Power-saving modes	43
Handling the battery	44
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
Setting up a presentation	52
Using dual displays	53
Using the NVIDIA Optimus Graphics feature	53
Using the color sensor	54
Using audio features	54
Using the camera	55
Using the optical drive	55
Using an ExpressCard, a flash media card, or a smart card	56
Installing an ExpressCard, a flash media card, or a smart card	56
Removing an ExpressCard, a flash media card, or a smart card	57
Chapter 3. You and your computer	59
Accessibility and comfort	59
Ergonomic information	59
Comfort	60
Accessibility information	60
Traveling with your computer	61
Travel tips	61
Travel accessories	61
Chapter 4. Security	63
Using passwords	63
Typing passwords	63
Power-on password	63
Supervisor password	64
Hard disk passwords	65
Hard disk security	67
Setting the security chip	68
Using the fingerprint reader	69
Notice on deleting data from your hard disk drive or solid-state drive	72
Using firewalls	73
Protecting data against viruses	73
Chapter 5. Recovery overview	75
Recovery overview for the Windows 7 operating system	75
Creating and using a recovery media	75
Performing backup and recovery operations	76
Using the Rescue and Recovery workspace	77
Creating and using a rescue medium	78
Reinstalling preinstalled programs and device drivers	79
Solving recovery problems	79
Recovery overview for the Windows 8 and Windows 8.1 operating systems	80
Refreshing your computer	80
Resetting your computer to the factory default settings	80
Using the advanced startup options	81
Recovering your operating system if Windows 8 or Windows 8.1 fails to start	81
Creating and using recovery media	82
Chapter 6. Replacing devices	85
Static electricity prevention	85
Replacing the battery pack	85
Installing or replacing the SIM card	87
Replacing the Ultrabay device	88
Replacing a memory module	91
Replacing the hard disk drive or solid-state drive	93
Replacing a wireless LAN card	96
Replacing a wireless WAN card	99
Replacing the coin-cell battery	103
Replacing the keyboard	105
Chapter 7. Enhancing your computer	111
Finding ThinkPad options	111
ThinkPad docking stations	111
Locating controls and connectors on the ThinkPad docking stations	111
Attaching a ThinkPad docking station	116
Detaching a ThinkPad docking station	117
Connecting external displays to a docking station	118
Security features	119
Chapter 8. Advanced configuration	121
Installing a new operating system	121
Installing the Windows 7 operating system	121
Installing the Windows 8 or Windows 8.1 operating system	122
Installing device drivers	123
Using the ThinkPad Setup program	123
Main menu	124
Config menu	124
Date and Time menu	130
Security menu	130
Startup menu	136
Restart menu	138
Updating your system UEFI BIOS	138
Using system management	139
Setting management features	139
Chapter 9. Preventing problems	141
General tips for preventing problems	141
Making sure device drivers are current	142
Taking care of your computer	143
Cleaning the cover of your computer	144
Chapter 10. Troubleshooting computer problems	147
Diagnosing problems	147
Troubleshooting	147
Computer stops responding	147
Spills on the keyboard	148
Error messages	148
Errors without messages	150
Beep errors	151
Memory module problems	151
Networking problems	151
Problems with the keyboard and other pointing devices	153
Problems with the display and multimedia devices	154
Fingerprint reader problems	157
Battery and power problems	158
Problems with drives and other storage devices	160
A software problem	162
Problems with ports and connectors	162
Chapter 11. Getting support	163
Before you contact Lenovo	163
Getting help and service	163
Using diagnostic programs	164
Lenovo Support Web site	164
Calling Lenovo	164
Purchasing additional services	165
Appendix A. Regulatory information	167
Wireless related information	167
Location of the UltraConnect wireless antennas	168
Locating wireless regulatory notices	169
Export classification notice	169
Electronic emission notices	169
Federal Communications Commission Declaration of Conformity	169
Industry Canada Class B emission compliance statement	170
European Union - Compliance to the Electromagnetic Compatibility Directive	170
German Class B compliance statement	170
Korea Class B compliance statement	171
Japan VCCI Class B compliance statement	171
Japan compliance statement for products which connect to the power mains with rated current less than or equal to 20 A per phase	171
Lenovo product service information for Taiwan	171
Appendix B. WEEE and recycling statements	173
Important WEEE information	173
Japan recycling statements	173
Recycling information for Brazil	174
Battery recycling information for the European Union	174
Battery recycling information for Taiwan	175
Battery recycling information for the United States and Canada	175
Recycling information for China	175
Appendix C. ENERGY STAR model information	177
Appendix D. Notices	179
Trademarks	180
Appendix E. Restriction of Hazardous Substances Directive (RoHS)	181
European Union RoHS	181
China RoHS	181
India RoHS	181
Turkish RoHS	181
Ukraine RoHS	182

Match case Limit results 1 per page

If your computer is getting no power at all, check the following items:

1. Verify the power button. The power button is illuminated whenever the computer is on.

2. Check all power connections. Remove any power strips and surge protectors to connect the ac power

adapter directly to the ac power outlet.

3. Inspect the ac power adapter. Check for any physical damage, and make sure that the power cable is

ﬁrmly attached to the adapter brick and the computer.

4. Verify the ac power source is working by attaching another device to the outlet.

If your computer does not run on battery power, check the following items:

1. Remove and reinstall the battery to make sure that it is properly connected.

2. If the battery runs out of power, attach ac power adapter to recharge the battery.

3. If the battery is charged but the computer does not run, replace the battery with a new one.

A power button problem

Problem

: The system does not respond, and you cannot turn off the computer.

Solution

: Turn off the computer by pressing and holding the power button for 4 seconds or more. If the

computer is still not reset, remove the ac power adapter and the battery.

Boot problems

Print these instructions now and keep them with your computer for reference later.

If you receive an error message before the operating system loads, follow the appropriate corrective actions

for power-on self-test (POST) error messages.

If you receive an error message while the operating system is loading the desktop conﬁguration after the

POST is completed, check the following items:

1. Go to the Lenovo Support Web site at http://www.lenovo.com/support and search for the error message.

2. Go to the Microsoft Knowledge Base homepage at http://support.microsoft.com/ and search for the

error message.

Sleep and hibernation problems

•

Problem

: The computer enters sleep mode unexpectedly.

Solution

: If the microprocessor overheats, the computer automatically enters sleep mode to allow the

computer to cool and to protect the microprocessor and other internal components. Check the settings

for sleep mode.

•

Problem

: The computer enters sleep mode immediately after the power-on self-test.

Solution

: Ensure that:

– The battery is charged.

– The operating temperature is within the acceptable range. Refer to “Operating environment” on page

13.

If the battery is charged and the temperature is within range, have the computer serviced.

•

Problem

: A critical low-battery error occurs, and the computer immediately turns off.

Solution

: The battery power is getting low. Plug the ac power adapter into an electrical outlet and

connect the ac power adapter to the computer, or replace the battery with a charged one.

Chapter 10

Troubleshooting computer problems

143