My screen goes blank while the computer is on | Lenovo Y450 manual

Chapter 4. Troubleshooting

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

Restore backed-up files to your Windows environment or the entire contents of your hard disk to the original factory contents using OneKey Recovery. If you still see only the cursor on the screen, have the computer serviced.

My screen goes blank while the computer is on.

Your screen saver or power management may be enabled. Do one of the following to exit from the screen saver or to resume from sleep or hibernation mode:

Touch the touchpad.

Press any key on the keyboard.

Press the power button.

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Lenovo Y450 manual My screen goes blank while the computer is on

Contents

Lenovo IdeaPad Y450 Page Energy Star model information Page Explanation of hard disk capacity Page Contents 107 Contents108 110 Iii129 Top view Getting to know your computer Array microphone built-in Getting to know your computer Wireless LAN antennasSpeakers System status indicators Power button Getting to know your computer Left-side view Fan louvers Getting to know your computer Security keyhole Right-side view AC power adapter jack Front view Integrated wireless device switch Getting to know your computer System status indicators Bottom view Battery latch manual Getting to know your computer Battery latch spring loaded Using the touchpad Using your computer Pinch Using your computer„ Gestures ChiralMotion „ Palm Check „ Numeric keypad Using the keyboard „ Function key combinations Using your computer „ Touch inductive panel with multi-media buttons Special keys and buttons OneKey Theater Using your computer SlideBar „ OneKey Rescue System button Using the optical drive Using memory cards „ Removing a memory card „ Inserting a memory card Using the integrated camera Using Lenovo remote specific models only „ Using RJ-45 port Using the Internet „ Using wireless LAN „ Attaching a security lock optional Securing your computer „ Using passwords „ Using VeriFace Using battery and AC adapter Installing device drivers„ Checking battery status „ Using the AC adapter „ Charging the battery „ Handling the battery Connecting a Universal Serial Bus USB device Using external devices Using external devices Connecting an eSATA device Connecting an Ieee 1394 device Connecting an ExpressCard/34 device „ Removing an ExpressCard device „ Inserting an ExpressCard device „ Connecting a VGA monitor Connecting an external display „ Connecting an Hdmi monitor Connecting a headphone and audio device Using external devices Connecting an external microphone „ Enabling Bluetooth communications Connecting Bluetooth enabled devices specific models only Frequently asked questions Troubleshooting Where are the recovery discs? Troubleshooting „ Display problems TroubleshootingWhen I turn on the computer, nothing appears on the screen My screen goes blank while the computer is on Number appears when you enter a letter „ a password problem„ Keyboard problems Forgot my password Computer enters sleep mode unexpectedly „ Sleep or hibernation problems Screen is blank „ Computer screen problems Incorrect characters appear on the screen Troubleshooting Screen is unreadable or distorted Computer does not operate with a fully charged battery „ Sound problems„ Battery problems Operating time for a fully charged battery is short Hard disk drive does not work „ a hard disk drive problem„ a startup problem Troubleshooting Battery does not charge Your computer does not respond „ Other problemsComputer does not start from a device you want Getting help and service Getting help and service Getting help on the Web Getting help and service Getting help and service Getting help and service Getting help around the world Important safety information Safety, use, and care information „ Conditions that require immediate action Safety, use, and care information „ Safety guidelines „ Service and upgrades „ Power cords and power adapters Safety, use, and care information „ Plugs and outlets „ Extension cords and related devices „ 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 Caring your computer „ Be careful about where and how you work Safety, use, and care information Safety, use, and care information „ Carry your computer properly „ Be gentle with your computer„ For outdoor use „ Handle storage media and drives properly „ Data safety „ Other important tips „ Take care in setting passwords „ Cleaning the cover of your computer „ Cleaning your computer keyboard „ Cleaning your computer display Accessibility and comfort „ Ergonomic information Safety, use, and care information „ What if you are traveling? Maintenance„ Questions about vision? „ General tips for maintenance Safety, use, and care information Safety, use, and care information „ What this warranty covers Appendix A. Lenovo limited warranty „ What your Service Provider will do to correct problems „ How to obtain warranty serviceAppendix A. Lenovo limited warranty 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 „ Suplemento de Garantía para México 100 101 Warranty Information Customer Replaceable Unit CRU service „ Types of warranty service102 103 On-site serviceCourier or depot service Customer carry-in or mail-in service 104 Product exchange service 105 Warranty service telephone numbers 106 107 Appendix B. Customer Replaceable Units CRUs Environment ƒ Temperature Appendix C. Specifications108 Battery pack Appendix C. Specifications109 110 Appendix D. Notices Appendix D. Notices 111 „ Television output notice „ Export classification notice112 113 „ Wireless interoperability 114 115 „ Usage environment and your health „ Federal Communications Commission FCC statement Electronic emissions notices116 „ Avis de conformité à la réglementation d’Industrie Canada „ Industry Canada Class B emission compliance statement117 118 „ German Class B compliance statement 119 120 „ European Union compliance statement Class B compliance 121 „ Korea Class B „ General recycling statement Weee and recycling statements122 123 EU Weee statements 124 Japan recycling statements 125 „ Disposing of a Lenovo computer components 126 127 128 129 Index 130 Problems Index 131 If your product is not working correctly Do not Return IT to the Store New World. New Thinking.TM