Troubleshooting, „ Display problems | Lenovo Y450 guide

Chapter 4. Troubleshooting

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

If you do not find your problem here, see Chapter 2. The following section only describes problems that might prevent you from accessing the comprehensive information in Chapter 2.

Display problems

When I turn on the computer, nothing appears on the screen.

Note:

If you are using an external monitor, see “Computer screen problems” on page 49.

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.

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Lenovo Y450 manual Troubleshooting, „ Display problems, When I turn on the computer, nothing appears on the screen

Contents

Lenovo IdeaPad Y450 Page Energy Star model information Page Explanation of hard disk capacity Page Contents Contents 107108 Iii 110129 Getting to know your computer Top view Power button Getting to know your computer Wireless LAN antennasSpeakers System status indicators Array microphone built-in Left-side view Getting to know your computer Getting to know your computer Security keyhole Fan louvers Right-side view AC power adapter jack Front view Getting to know your computer System status indicators Integrated wireless device switch Bottom view Getting to know your computer Battery latch spring loaded Battery latch manual Using your computer Using the touchpad ChiralMotion Using your computer„ Gestures Pinch „ Palm Check Using the keyboard „ Numeric keypad „ Function key combinations Using your computer Special keys and buttons „ Touch inductive panel with multi-media buttons Using your computer SlideBar OneKey Theater Using the optical drive „ OneKey Rescue System button Using memory cards „ Inserting a memory card „ Removing a memory card Using Lenovo remote specific models only Using the integrated camera Using the Internet „ Using RJ-45 port „ Using wireless LAN Securing your computer „ Attaching a security lock optional „ Using VeriFace „ Using passwords Installing device drivers Using battery and AC adapter„ Checking battery status „ Using the AC adapter „ Charging the battery „ Handling the battery Using external devices Connecting a Universal Serial Bus USB device Using external devices Connecting an eSATA device Connecting an Ieee 1394 device Connecting an ExpressCard/34 device „ Inserting an ExpressCard device „ Removing an ExpressCard device Connecting an external display „ Connecting a VGA monitor „ Connecting an Hdmi monitor Connecting a headphone and audio device Using external devices Connecting an external microphone Connecting Bluetooth enabled devices specific models only „ Enabling Bluetooth communications Troubleshooting Frequently asked questions Troubleshooting Where are the recovery discs? Troubleshooting „ Display problemsWhen I turn on the computer, nothing appears on the screen My screen goes blank while the computer is on Forgot my password „ a password problem„ Keyboard problems Number appears when you enter a letter „ Sleep or hibernation problems Computer enters sleep mode unexpectedly „ Computer screen problems Screen is blank Troubleshooting Screen is unreadable or distorted Incorrect characters appear on the screen Operating time for a fully charged battery is short „ Sound problems„ Battery problems Computer does not operate with a fully charged battery Troubleshooting Battery does not charge „ a hard disk drive problem„ a startup problem Hard disk drive does not work „ Other problems Your computer does not respondComputer does not start from a device you want Getting help and service Getting help and service Getting help and service Getting help on the Web Getting help and service Getting help and service Getting help around the world Safety, use, and care information Important safety information Safety, use, and care information „ Conditions that require immediate action „ Safety guidelines „ Service and upgrades „ Power cords and power adapters Safety, use, and care information „ Extension cords and related devices „ Plugs and outlets „ Power supply statement „ Lithium coin cell battery notice „ Heat and product ventilation Safety, use, and care information „ CD and DVD drive safety „ Electrical current safety information Safety, use, and care information „ Laser compliance statement Safety, use, and care information „ Liquid Crystal Display LCD notice „ Be careful about where and how you work Caring your computer Safety, use, and care information Safety, use, and care information „ Be gentle with your computer „ Carry your computer properly„ For outdoor use „ Data safety „ Handle storage media and drives properly „ Take care in setting passwords „ Other important tips „ Cleaning the cover of your computer „ Cleaning your computer keyboard Accessibility and comfort „ Cleaning your computer display „ Ergonomic information Safety, use, and care information Maintenance „ What if you are traveling?„ Questions about vision? „ General tips for maintenance Safety, use, and care information Safety, use, and care information Appendix A. Lenovo limited warranty „ What this warranty covers „ How to obtain warranty service „ What your Service Provider will do to correct problemsAppendix A. Lenovo limited warranty „ Replacement of a product or part Warranty Information „ Your additional responsibilities „ Use of personal information „ What this warranty does not cover „ Limitation of liability „ Dispute resolution „ Other rights „ European Economic Area EEA „ Suplemento de Garantía para México 100 Warranty Information 101 „ Types of warranty service Customer Replaceable Unit CRU service102 Customer carry-in or mail-in service On-site serviceCourier or depot service 103 Product exchange service 104 Warranty service telephone numbers 105 106 Appendix B. Customer Replaceable Units CRUs 107 Appendix C. Specifications Environment ƒ Temperature108 Appendix C. Specifications Battery pack109 Appendix D. Notices 110 111 Appendix D. Notices „ Export classification notice „ Television output notice112 „ Wireless interoperability 113 114 „ Usage environment and your health 115 Electronic emissions notices „ Federal Communications Commission FCC statement116 „ Industry Canada Class B emission compliance statement „ Avis de conformité à la réglementation d’Industrie Canada117 „ German Class B compliance statement 118 119 „ European Union compliance statement Class B compliance 120 „ Korea Class B 121 Weee and recycling statements „ General recycling statement122 EU Weee statements 123 Japan recycling statements 124 „ Disposing of a Lenovo computer components 125 126 127 128 Index 129 Problems 130 131 Index Do not Return IT to the Store If your product is not working correctly New World. New Thinking.TM