Troubleshooting Keyboard problems | Lenovo U150 guide

Chapter 5. Troubleshooting

Keyboard problems

A number appears when	• The numeric lock function is on. To disable it, press
you enter a letter.	Fn + Insert.

Sleep or hibernation problems

The computer enters sleep	• If the processor overheats, the computer automatically
mode unexpectedly.	enters sleep mode to allow the computer to cool and to
	protect the processor and other internal components.
	Check the settings for sleep mode.
The computer enters sleep	• Make sure that:
mode immediately after	- The battery is charged.
Power-on self-test (POST).	- The operating temperature is within the acceptable
	range. See “Appendix B. Use and care
	information” on page 67.

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

The critical low-battery error	• The battery power is getting low. Connect the AC
message appears, and the	adapter to the computer, or replace the battery with
computer immediately turns	a fully charged one.
off.

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Lenovo U150 manual Troubleshooting Keyboard problems, Sleep or hibernation problems

Contents

Lenovo IdeaPad U150 First Edition July Copyright Lenovo Respective Users Explanation of hard disk capacity Page Page Contents 118 Contents Appendix B. Use and careAppendix F. Features Appendix C. Lenovo limited Iii Important safety informationImportant safety information „ Read this first Important safety information Unpack Important safety information Working place Important safety information On using Vii Important safety information Viii Important safety information Service and upgrades Getting to know your computer Camera Power button Mute buttonGetting to know your computer Integrated Left-side view RJ-45 port SwitchRight-side view USB port Adapter jack Getting to know your computer AC power Front view Bottom view Battery latch- manual Mini PCI ExpressCard slot compartment Battery pack „ Read the manuals „ Connect to the powerInstall the battery pack Learning the basics Putting your computer into sleep state „ Configure the operating system„ Turn on the computer Learning the basics „ Shutting down your computer „ Charging the battery Using AC adapter and battery„ Checking battery status „ Removing the battery pack „ Handling the battery Right click button Using the touchpadLeft click button Rotating „ GesturesPinch zoom Two-Finger Scrolling Learning the basics Three-Finger Flick „ Numeric keypad Using the keyboard „ Function key combinations Fn + F3 Fn + EscFn + F1 Fn + F2 Special buttons Learning the basics OneKey Rescue System button Touchpad indicator System status indicators „ Attaching a security lock not supplied Securing your computer „ Using passwords „ Using VeriFace „ Using memory cards not supplied Connecting external devices „ Removing a memory card „ Inserting a memory card Enabling Bluetooth communications „ Connecting a universal serial bus USB device„ Connecting a Bluetooth device specific models only Wired connection Using the Internet Cable „ Software configurationUsing the Internet „ Hardware connection Wi-Fi Wireless connection Hardware connection „ Using Wi-Fi/WiMax specific models onlyEnabling wireless connection Software configuration „ Using Mobile Broadband specific models only Inserting the SIM card Removing the SIM card Using the Internet „ Introduction OneKey Rescue SystemOneKey Rescue System OneKey Rescue System OneKey Rescue System Frequently Asked Questions Troubleshooting Where are the recovery discs? Troubleshooting What can I do if the backup process fails? Display problems Troubleshooting Computer is on Password problem Sleep or hibernation problems Troubleshooting Keyboard problems Computer does not return from sleep mode and does not work Sound problems Troubleshooting Computer screen problems Startup problem Troubleshooting Battery problemsHard disk drive problem Other problems Troubleshooting OneKey Rescue System problems Connected external Upgrading and replacing devices Replacing the battery Upgrading and replacing devices Replacing memory Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Handling a hard disk drive Replacing the hard disk drive Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Appendix A. Getting help and service Getting help on the Web Appendix A. Getting help and service Appendix A. Getting help and service Appendix A. Getting help and service Getting help around the world Caring for your computer „ Be careful about where and how you workAppendix B. Use and care information Appendix B. Use and care information „ Notice of static-electricity „ Carry your computer properly „ Be gentle with your computer „ Handle storage media and drives properly „ For outdoor use „ Other important tips „ Data safety„ Take care in setting passwords Appendix B. Use and care information „ Ergonomic information Accessibility and comfort „ Questions about vision? „ What if you are traveling? „ General tips for maintenance Maintenance Appendix B. Use and care information „ Cleaning the cover of your computer „ Cleaning your computer keyboard „ Cleaning your computer display „ What this warranty covers Appendix C. Lenovo limited warranty Appendix C. Lenovo limited warranty „ How to obtain warranty service„ What your service provider will do to correct problems Information „ Replacement of a product or part „ Use of personal information „ Your additional responsibilities „ What this warranty does not cover „ Limitation of liability „ Dispute resolution „ European Economic Area EEA „ Other rights Lenovo Technology B.V. Turkiye Istanbul Subesi „ Lenovo Turkey address UAE Warranty information Customer Replaceable Unit CRU Service „ Types of warranty service Customer Carry-In or Mail-In Service Appendix C. Lenovo limited warranty On-site ServiceCourier or Depot Service Product Exchange Service Appendix D. Customer replaceable units CRUs Appendix D. Customer replaceable units CRUs Appendix E. Notices Appendix E. Notices „ Export classification notice Energy Star model information Windows 100Windows Vista 101 Wireless related information„ Wireless interoperability 102 „ Usage environment and your health 103 „ Safety information related to Mobile Broadband 104 105 Electronic emissions notices„ Federal Communications Commission FCC Statement 106 „ Industry Canada Class B Emission Compliance Statement 107 „ Avis de conformité à la réglementation d’Industrie Canada„ German Class B Compliance Statement 108 109 „ European Union Compliance Statement Class B Compliance 110 111 „ Japan Compliance Statement for Power line Harmonics„ Korea Class B 112 Weee and recycling statements„ General recycling statement 113 EU Weee statements 114 Japan recycling statements 115 „ Disposing of a Lenovo Computer Components 116 117 Form Factor Appendix F. Features and Specifications118 Model Name IdeaPad U150 119 Appendix F. Features and Specifications Ports 120 Trademarks 121 Index Index 122 123 Page If your product is not working correctly Do not Return IT to the Store New World. New Thinking.TM