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Lenovo Y550P manual Troubleshooting, „ Display problems

Models: Y550P

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Chapter 5. 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 48.

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.

Page 52

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Lenovo Y550P manual Troubleshooting, „ Display problems, When I turn on the computer, nothing appears on the screen

Contents

Lenovo IdeaPad Y550P User GuideFirst Edition July Copyright Lenovo ENERGY STAR model information Table 1. ENERGY STAR power-management features, by operating system Windows Power plan Energy Star Turn off the display After 10 minutesPut the computer to sleep After 25 minutes Advanced power settings Turn off hard disks After 20 minutes Hibernate After 1 hourExplanation of hard disk capacity II. A portion of the hard disk space is used for specific purposes Contents Using Your ComputerUsing External Devices Chapter 5. TroubleshootingContents Chapter 7. Safety, Use and CareChapter 6. Getting Help and Appendix A. Lenovo LimitedTop view Chapter 1. Getting to Know Your Computerc d e i Power button Wireless LAN antennas Volume buttonsChapter 1. Getting to Know Your Computer Computer displayChapter 1. Getting to Know Your Computer Left-side viewd e f g Chapter 1. Getting to Know Your Computer Security keyholeFan louvers Make sure that none of the fan louvers are blocked, otherwiseAC power adapter jack Right-side viewChapter 1. Getting to Know Your Computer TV-in jack specific models onlyIntegrated wireless device switch System status indicatorsFront view Chapter 1. Getting to Know Your ComputerBottom view Chapter 1. Getting to Know Your ComputerBattery latch - spring loaded Battery latch - manualChapter 1. Getting to Know Your Computer SubwooferUsing the touchpad Chapter 2. Using Your Computerb a cd Chapter 2. Using Your Computer „ Gestures„ Palm Check PinchChapter 2. Using Your Computer Using the keyboard„ Numeric keypad Chapter 2. Using Your Computer „ Function key combinationsChapter 2. Using Your Computer Fn + F1 Put your computer in sleep mode„ Touch inductive panel and volume buttons Chapter 2. Using Your ComputerSpecial keys and buttons d e f gChapter 2. Using Your Computer Volume buttons ~Touch inductive panel ~ Lenovo SlideNav barUsing the optical drive Using memory cardsChapter 2. Using Your Computer Your computer comes with an optical drive, such as a CD/DVD driveChapter 2. Using Your Computer Only use the memory card types listed above for more information on usage, read the instructions shipped with the memory cardUsing the integrated camera Using lenovo remote control specific models onlyChapter 2. Using Your Computer „ Using RJ-45 port Using the internetChapter 2. Using Your Computer „ Using wireless LAN Chapter 2. Using Your ComputerSecuring your computer Chapter 2. Using Your Computer„ Attaching a security lock optional „ Using passwords „ Using VeriFaceChapter 2. Using Your Computer Installing device drivers Using battery and AC adapter„ Checking battery status Chapter 2. Using Your Computer„ Using the AC adapter Chapter 2. Using Your Computer„ Charging the battery „ Handling the batteryChapter 2. Using Your Computer DangerChapter 2. Using Your Computer ƒ Replace only with a battery of the type recommended by LenovoDanger DangerChapter 3. Using External Devices Connecting a Universal Serial Bus USB deviceChapter 3. Using External Devices Connecting an eSATA/USB port device Chapter 3. Using External DevicesChapter 3. Using External Devices Connecting a PC card deviceOnly use the ExpressCard/34 module Chapter 3. Using External Devices „ Inserting an ExpressCard/34 module„ Removing an ExpressCard/34 module 1 Push the ExpressCard/34 module until you hear a click„ Connecting a VGA monitor Connecting an external displayChapter 3. Using External Devices „ Connecting an HDMI monitor Chapter 3. Using External DevicesConnecting a headphone and audio device Chapter 3. Using External DevicesChapter 3. Using External Devices Listening to music at high volume over extended periods of time may damage your hearingConnecting an external microphone Chapter 3. Using External DevicesChapter 3. Using External Devices „ Enabling Bluetooth communicationsConnecting a Bluetooth device specific models only OneKey Rescue System Chapter 4. OneKey Rescue System„ Introduction For more instructions, see the help file of Lenovo OneKey Recovery „ Using Lenovo OneKey Recovery Within Windows operating systemChapter 4. OneKey Rescue System „ Using Lenovo OneKey Rescue System Without Windows operating system Chapter 4. OneKey Rescue SystemChapter 5. Troubleshooting Frequently Asked QuestionsChapter 5. Troubleshooting Where are the recovery discs?Where can I find warranty information? How can I install the device drivers?Chapter 5. Troubleshooting When do I need to restore the system to the factory status?Troubleshooting „ Display problemsChapter 5. Troubleshooting When I turn on the computer, nothing appears on the screenMy screen goes blank while the computer is on Chapter 5. Troubleshootingƒ Touch the touch pad ƒ Press any key on the keyboard „ A Password problem „ Keyboard problemsChapter 5. Troubleshooting I forgot my passwordChapter 5. Troubleshooting „ Sleep or hibernation problemsThe computer enters sleep mode unexpectedly Chapter 5. Troubleshooting „ Computer screen problemsThe screen is blank Chapter 5. Troubleshooting The screen is unreadable or distortedIncorrect characters appear on the screen You get poor or no playback of video, DVD or game applications„ Sound problems „ Battery problemsChapter 5. Troubleshooting Your computer operates after the battery status indicator shows empty„ A hard disk drive problem „ A startup problem„ OneKey Rescue System problems Chapter 5. Troubleshooting„ Other problems Chapter 5. TroubleshootingFail to restore system partition to factory default Your computer does not respondChapter 6. Getting Help and Service Getting help and serviceGetting help on the Web Chapter 6. Getting Help and ServiceCalling the customer support center Chapter 6. Getting Help and Service The following items are not coveredChapter 6. Getting Help and Service ƒ Machine Type and ModelChapter 6. Getting Help and Service Warranty Service Telephone NumbersLenovo warranty service telephone numbers Getting help around the worldChapter 7. Safety, Use and Care Information Important safety informationChapter 7. Safety, Use and Care Information „ Conditions that require immediate action„ Safety guidelines Chapter 7. Safety, Use and Care Information„ Service and upgrades Chapter 7. Safety, Use and Care Information„ Power cords and power adapters Chapter 7. Safety, Use and Care InformationDanger DangerChapter 7. Safety, Use and Care Information Protect power cords and power adapters from liquids. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can eventually result in overheatingChapter 7. Safety, Use and Care Information „ Extension cords and related devices„ Plugs and outlets DangerChapter 7. Safety, Use and Care Information „ Power supply statementDanger Chapter 7. Safety, Use and Care Information „ Lithium coin cell battery noticeDanger „ Heat and product ventilation Chapter 7. Safety, Use and Care InformationDanger Chapter 7. Safety, Use and Care Information ƒ Keep the cover closed whenever the computer is plugged inChapter 7. Safety, Use and Care Information „ CD and DVD drive safetyDanger Chapter 7. Safety, Use and Care Information „ Electrical current safety informationDanger Chapter 7. Safety, Use and Care Information To connect 1. Turn everything OFFChapter 7. Safety, Use and Care Information „ Laser compliance statementWhen a CD or DVD drive is installed, note the following handling instructions Chapter 7. Safety, Use and Care InformationDanger „ Liquid crystal display LCD notice Chapter 7. Safety, Use and Care InformationDanger Chapter 7. Safety, Use and Care Information „ Be careful about where and how you workCaring your computer Chapter 7. Safety, Use and Care Information ƒ Place liquids away from your computer to avoid spills, and keep your computer away from water to avoid the danger of electrical shockChapter 7. Safety, Use and Care Information Not all such appliances cause a significant electrostatic chargeChapter 7. Safety, Use and Care Information „ Be gentle with your computer„ Carry your computer properly „ For outdoor useChapter 7. Safety, Use and Care Information „ Data safety„ Handle storage media and drives properly Chapter 7. Safety, Use and Care Information „ Take care in setting passwords„ Other important tips „ Cleaning the cover of your computer Chapter 7. Safety, Use and Care Information„ Cleaning your computer keyboard Chapter 7. Safety, Use and Care Information„ Cleaning your computer display Accessibility and comfortChapter 7. Safety, Use and Care Information Chapter 7. Safety, Use and Care Information „ Ergonomic informationChapter 7. Safety, Use and Care Information General Posture Below are some general recommendations for assuming a healthy working posture. It is best to periodically make minor modifications in your working posture to deter the onset of discomfort caused by long periods of working in the same position. Frequent, short breaks from your work will also help to prevent any minor discomfort associated with your working postureMaintenance Chapter 7. Safety, Use and Care Information„ What if you are traveling? „ Questions about vision?„ General tips for maintenance Chapter 7. Safety, Use and Care InformationChapter 7. Safety, Use and Care Information ƒ Update device drivers and BIOS when neededChapter 7. Safety, Use and Care Information ƒ If required, you can find your country’s Customer Support Center at the following Web address http//consumersupport.lenovo.comAppendix A. Lenovo Limited Warranty „ What this warranty covers„ What your service provider will do to correct problems „ How to obtain warranty serviceAppendix A. Lenovo Limited Warranty Appendix A. Lenovo Limited Warranty „ Replacement of a product or partInformation.” „ Your additional responsibilities Appendix A. Lenovo Limited Warranty„ Use of personal information „ What this warranty does not cover Appendix A. Lenovo Limited WarrantyAppendix A. Lenovo Limited Warranty „ Limitation of liability„ Dispute resolution Appendix A. Lenovo Limited WarrantyAppendix A. Lenovo Limited Warranty „ Other rights„ European Economic Area EEA „ Lenovo Turkey addressWarranty information Appendix A. Lenovo Limited WarrantyAppendix A. Lenovo Limited Warranty „ Types of warranty service1 Customer Replaceable Unit “CRU” Service Appendix A. Lenovo Limited Warranty 2 On-site ServiceUnder On-Site Service, your Service Provider will either repair or exchange the product at your location. You must provide a suitable working area to allow disassembly and reassembly of the Lenovo product. For some products, certain repairs may require your Service Provider to send the product to a designated service center 3 Courier or Depot Service5 Product Exchange Service Appendix A. Lenovo Limited WarrantyUnder Product Exchange Service, Lenovo will ship a replacement product to your location. You are responsible for its installation and verification of its operation. The replacement product becomes your property in exchange for the failed product, which becomes the property of Lenovo. You must pack the failed product in the shipping carton used to ship the replacement product and return it to Lenovo. Transportation charges, both ways, are paid by Lenovo. Failure to use the carton in which the replacement product was received may result in your responsibility for damage to the failed product during shipment. You may be charged for the replacement product if Lenovo does not receive the failed product within thirty 30 days of your receipt of the replacement product Appendix B. Customer Replaceable Units CRUs Appendix C. Specifications SpecificationsEnvironment ƒ Temperature SizeAppendix C. Specifications Battery ƒ Lithium-ion Li-Ion battery packPower source AC adapter ƒ Input rating of the AC adapter 100-240 V ac, 50 to 60 Hz ƒ 90 WLenovo United States, Inc 1009 Think Place - Building One Appendix D. NoticesMorrisville, NC U.S.A Attention Lenovo Director of Licensing Appendix D. Notices „ Television output notice „ Export classification noticeAppendix D. Notices „ Wireless interoperability Wireless related informationAppendix D. Notices „ Usage environment and your health Appendix D. Noticesƒ Using the integrated wireless cards on board of airplanes, or in hospitals Appendix D. Notices„ Products with television tuner options installed „ Note to CATV system installerTV tuner information Appendix D. Notices„ Example of antenna grounding Appendix D. NoticesThe following notice applies to all countries and regions Appendix D. NoticesDanger „ Federal Communications Commission FCC Statement Electronic emissions noticesAppendix D. Notices „ Avis de conformité à la réglementation d’Industrie Canada „ Industry Canada Class B Emission Compliance StatementAppendix D. Notices „ German Class B Compliance Statement Appendix D. NoticesAppendix D. Notices Informationen in Hinsicht EMVG Paragraf 4 Abs. 1„ European Union Compliance Statement Class B Compliance Appendix D. Notices„ Japanese VCCI Class B Statement „ Lenovo Product Service InformationAppendix D. Notices „ Korea Class B „ Japan Compliance Statement for Power line HarmonicsAppendix D. Notices Turkish statement of compliance Türkiye EEE Yönetmeliğine Uygunluk BeyanıWEEE and recycling statements „ General recycling statementEU WEEE Statements Appendix D. Notices„ Collecting and Recycling a Disused Lenovo Computer or Monitor Japan Recycling StatementsAppendix D. Notices „ Disposing of a Lenovo Computer Components „ Disposing a Disused Battery Pack from Lenovo Notebook ComputersAppendix D. Notices Notice for Users in the U.S.A Notice on deleting data from your hard diskAppendix D. Notices ƒ Using the preinstalled recovery program, bring the hard disk back to factory-ship state Appendix D. NoticesAppendix D. Notices TrademarksIndex BluetoothIndex Index Index Wireless LANUsage environment Page LENOVO If your product is not working correctlyDO NOT RETURN IT TO THE STORE New World. New Thinking.TM Lenovo China P/N 147002625 Printed in China

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

Display problems

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

Display problems