Troubleshooting Other problems, Respond | Lenovo U350 specification

Chapter 5. Troubleshooting

Other problems

The computer does not	• To turn off your computer, press and hold the power
respond.	button for 4 seconds or more. If the computer still does
	not respond, remove the AC adapter and the battery.
	• Your computer might lock when it enters sleep mode
	during a communication operation. Disable the
	sleep timer when you are working on the network.

The computer does not start from the desired device.

•See the Boot menu of BIOS Setup Utility. Make sure that Boot priority order in BIOS Setup Utility is set so that the computer starts from the device you want.

•Also make sure that the device from which the computer starts is enabled. In the Boot menu in BIOS Setup Utility, make sure that the device is included in the Boot priority order list.

The connected external	• Do not connect or disconnect any external device
device does not work.	cables other than Plug and Play (PnP) device while
	the computer power is on; otherwise, you might
	damage your computer.
	• When using a high power consumption external
	devices such as an external USB optical disk drive,
	use external device power adapter. Otherwise, the
	device may not be recognized, or system shut down
	may result.

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Lenovo U350 manual Troubleshooting Other problems, Respond

Contents

Lenovo IdeaPad U350 First Edition May Copyright Lenovo 2009. All rights reserved Respective Users Explanation of hard disk capacity Page Page Contents Appendix C. Lenovo limited Contents Appendix B. Use and careAppendix F. Features 117 „ Read this first Important safety informationImportant safety information Iii Important safety information Unpack Important safety information Working place Important safety information On using Important safety information Vii Important safety information Service and upgrades Viii Getting to know your computer Mute button Ambient Light Sensor Power buttonGetting to know your computer Wireless module antennas Computer display Touchpad Left-side view Right-side view Bottom view Battery pack Getting to know your computer Speakers Learning the basics „ Connect to the powerInstall the battery pack „ Read the manuals Learning the basics „ Configure the operating system„ Turn on the computer Putting your computer into sleep state „ 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 Using the keyboard „ Numeric keypad „ Function key combinations Fn + F2 Fn + EscFn + F1 Fn + F3 Special keys and buttons Learning the basics OneKey Rescue System button Mute button System status indicators Touchpad indicator Securing your computer „ Attaching a security lock not supplied „ Using VeriFace „ Using passwords Connecting external devices „ Using memory cards not supplied „ Inserting a memory card „ Removing a memory card Enabling Bluetooth communications „ Connecting a universal serial bus USB device„ Connecting a Bluetooth device specific models only Page Using the Internet Wired connection „ Hardware connection „ Software configurationUsing the Internet Cable Wireless connection Wi-Fi Software configuration „ Using Wi-Fi/WiMax specific models onlyEnabling wireless connection Hardware connection „ Using Mobile Broadband specific models only Inserting the SIM card Removing the SIM card Using the Internet „ Introduction OneKey Rescue SystemOneKey Rescue System „ Using Lenovo OneKey Recovery in Windows OneKey Rescue System OneKey Rescue System Troubleshooting Frequently Asked Questions Troubleshooting Where are the recovery discs? What can I do if the backup process fails? Troubleshooting Display problems Password problem Computer is on Troubleshooting Keyboard problems Sleep or hibernation problems Computer does not return from sleep mode and does not work Troubleshooting Computer screen problems Sound problems Startup problem Troubleshooting Battery problemsHard disk drive problem Troubleshooting OneKey Rescue System problems Made Troubleshooting Other problems Respond Replacing the battery Upgrading and replacing devices Upgrading and replacing devices Replacing the hard disk drive Handling a 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 Appendix A. Getting help and service Getting help on the Web Appendix A. Getting help and service Appendix A. Getting help and service Getting help around the world Caring your computer „ Be careful about where and how you workAppendix B. Use and care information „ Notice of static-electricity Appendix B. Use and care information „ Be gentle with your computer „ Carry your computer properly „ For outdoor use „ Handle storage media and drives properly „ Other important tips „ Data safety„ Take care in setting passwords Appendix B. Use and care information Accessibility and comfort „ Ergonomic information „ What if you are traveling? „ Questions about vision? Maintenance „ General tips for maintenance Appendix B. Use and care information „ Cleaning the cover of your computer „ Cleaning your computer keyboard „ Cleaning your computer display Appendix C. Lenovo limited warranty „ What this warranty covers 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 „ Your additional responsibilities „ Use of personal information „ What this warranty does not cover „ Limitation of liability „ Dispute resolution „ Other rights „ European Economic Area EEA „ Lenovo Turkey address Lenovo Technology B.V. Turkiye Istanbul Subesi Warranty information „ Types of warranty service Customer Replaceable Unit CRU Service Customer Carry-In or Mail-In Service Appendix C. Lenovo limited warranty On-site ServiceCourier or Depot Service Product Exchange Service Warranty Service Telephone Numbers SMS 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 XP Windows Vista „ Wireless interoperability 100 „ Usage environment and your health 101 „ Safety information related to Mobile Broadband 102 103 104 Electronic emissions notices„ Federal Communications Commission FCC Statement „ Industry Canada Class B Emission Compliance Statement 105 106 „ Avis de conformité à la réglementation d’Industrie Canada„ German Class B Compliance Statement 107 „ European Union Compliance Statement Class B Compliance 108 109 110 „ Japan Compliance Statement for Power line Harmonics„ Korea Class B 111 Weee and recycling statements„ General recycling statement EU Weee statements 112 Japan recycling statements 113 „ Disposing of a Lenovo Computer Components 114 115 116 Model Name IdeaPad U350 Appendix F. Features and Specifications117 Form Factor Appendix F. Features and Specifications Ports 118 Trademarks 119 Index 120 121 Index 122 Do not Return IT to the Store If your product is not working correctly New World. New Thinking.TM