Troubleshooting, Display problems | Lenovo U350 manual

Chapter 5. Troubleshooting

Troubleshooting -----------------------------------------------------------------------------

If you do not find your problem here, see Chapter 2. The following section only describes problems that might negate the need to refer to the more comprehensive information in Chapter 2.

Display problems

When I turn on the compu- ter, nothing appears on the screen.

When I turn on the computer, only a white cursor appears on a blank screen.

•If the screen is blank, make sure that:

-The battery is installed correctly.

-The AC adapter is connected to the computer and the power cord is plugged into a working electrical outlet.

-The computer power is on. (Press the power button again for confirmation.)

-The memory is installed correctly.

•If these items are properly set, and the screen remains blank, have the computer serviced.

•Restore backed-up files to your Windows environment or the entire contents of your system partition (C drive) to the original factory contents using OneKey Recovery. If you still see only the cursor on the screen, have the computer serviced.

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Lenovo U350 manual Troubleshooting, Display problems

Contents

Lenovo IdeaPad U350 First Edition May Copyright Lenovo 2009. All rights reserved Respective Users Explanation of hard disk capacity Page Page Contents 117 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 Getting to know your computer Power buttonMute button Ambient Light Sensor Touchpad Wireless module antennas Computer display Left-side view Right-side view Bottom view Getting to know your computer Speakers 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 „ Checking battery status Using AC adapter and battery„ Charging the battery „ Removing the battery pack „ Handling the battery Left click button Using the touchpadRight click button „ Numeric keypad Using the keyboard „ Function key combinations Fn + F3 Fn + EscFn + F1 Fn + F2 Special keys and buttons Mute button 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 „ Connecting a Bluetooth device specific models only „ Connecting a universal serial bus USB deviceEnabling Bluetooth communications Page 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 OneKey Rescue System OneKey Rescue System„ Introduction OneKey Rescue System „ Using Lenovo OneKey Recovery in Windows 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 Hard disk drive problem Troubleshooting Battery problemsStartup problem Made Troubleshooting OneKey Rescue System problems Respond Troubleshooting Other problems Upgrading and replacing devices Replacing the battery 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 Replacing memory 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 Appendix B. Use and care information „ Be careful about where and how you workCaring your computer 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 „ Take care in setting passwords „ Data safety„ Other important tips 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 „ What your service provider will do to correct problems „ How to obtain warranty serviceAppendix C. Lenovo limited warranty 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 Warranty information Customer Replaceable Unit CRU Service „ Types of warranty service Courier or Depot Service Appendix C. Lenovo limited warranty On-site ServiceCustomer Carry-In or Mail-In Service Product Exchange Service SMS Warranty Service Telephone Numbers Toll Free Number Outside of Sao Paulo Region 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 Vista Windows XP 100 „ Wireless interoperability 101 „ Usage environment and your health 102 „ Safety information related to Mobile Broadband 103 „ Federal Communications Commission FCC Statement Electronic emissions notices104 105 „ Industry Canada Class B Emission Compliance Statement „ German Class B Compliance Statement „ Avis de conformité à la réglementation d’Industrie Canada106 107 108 „ European Union Compliance Statement Class B Compliance 109 „ Korea Class B „ Japan Compliance Statement for Power line Harmonics110 „ General recycling statement Weee and recycling statements111 112 EU Weee statements 113 Japan recycling statements 114 „ Disposing of a Lenovo Computer Components 115 116 Form Factor Appendix F. Features and Specifications117 Model Name IdeaPad U350 118 Appendix F. Features and Specifications Ports 119 Trademarks 120 Index Index 121 122 If your product is not working correctly Do not Return IT to the Store New World. New Thinking.TM