Manuals / Lenovo / Computer Equipment / Laptop

Lenovo Y550P manual „ Computer screen problems, Troubleshooting, The screen is blank

Models: Y550P

1 142

Download 142 pages 27.45 Kb

Page 56

Chapter 5. Troubleshooting

If your computer is in sleep mode connect the AC adapter to the computer, then press any key or the power button.

If your computer is in hibernation mode or power-off state. Connect the AC adapter to the computer, then press the power button to resume operation.

If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press and hold the power button for 4 seconds or more. If the computer is still not reset, remove the AC adapter and the battery.

Computer screen problems

The screen is blank.

Do the following:

If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + up arrow to make the screen brighter.

If the Power indicator is in blinking, press the power button to resume from the sleep mode.

If the problem persist, follow do the Solution in the following problem “The screen is unreadable or distorted.”

Press Fn+F2 to confirm whether the LCD screen has been turned off.

48

Image 56

Lenovo Y550P manual „ Computer screen problems, Troubleshooting, The screen is blank

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 Limitedc d e i Chapter 1. Getting to Know Your ComputerTop view Power button Wireless LAN antennas Volume buttonsChapter 1. Getting to Know Your Computer Computer displayd e f g Left-side viewChapter 1. Getting to Know Your Computer 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 Subwooferb a cd Chapter 2. Using Your ComputerUsing the touchpad Chapter 2. Using Your Computer „ Gestures„ Palm Check Pinch„ Numeric keypad Using the keyboardChapter 2. Using Your Computer 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 cardChapter 2. Using Your Computer Using lenovo remote control specific models onlyUsing the integrated camera Chapter 2. Using Your Computer Using the internet„ Using RJ-45 port „ Using wireless LAN Chapter 2. Using Your Computer„ Attaching a security lock optional Chapter 2. Using Your ComputerSecuring your computer Chapter 2. Using Your Computer „ Using VeriFace„ Using passwords 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 DevicesOnly use the ExpressCard/34 module Connecting a PC card deviceChapter 3. Using External Devices 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 clickChapter 3. Using External Devices Connecting an external display„ Connecting a VGA monitor „ 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 DevicesConnecting a Bluetooth device specific models only „ Enabling Bluetooth communicationsChapter 3. Using External Devices „ Introduction Chapter 4. OneKey Rescue SystemOneKey Rescue System Chapter 4. OneKey Rescue System „ Using Lenovo OneKey Recovery Within Windows operating systemFor more instructions, see the help file of Lenovo OneKey Recovery „ 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 screenƒ Touch the touch pad ƒ Press any key on the keyboard Chapter 5. TroubleshootingMy screen goes blank while the computer is on „ A Password problem „ Keyboard problemsChapter 5. Troubleshooting I forgot my passwordThe computer enters sleep mode unexpectedly „ Sleep or hibernation problemsChapter 5. Troubleshooting The screen is blank „ Computer screen problemsChapter 5. Troubleshooting 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 serviceCalling the customer support center Chapter 6. Getting Help and ServiceGetting help on the Web 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 DangerDanger „ Power supply statementChapter 7. Safety, Use and Care Information Danger „ Lithium coin cell battery noticeChapter 7. Safety, Use and Care Information Danger Chapter 7. Safety, Use and Care Information„ Heat and product ventilation Chapter 7. Safety, Use and Care Information ƒ Keep the cover closed whenever the computer is plugged inDanger „ CD and DVD drive safetyChapter 7. Safety, Use and Care Information Danger „ Electrical current safety informationChapter 7. Safety, Use and Care Information Chapter 7. Safety, Use and Care Information To connect 1. Turn everything OFFChapter 7. Safety, Use and Care Information „ Laser compliance statementDanger Chapter 7. Safety, Use and Care InformationWhen a CD or DVD drive is installed, note the following handling instructions Danger Chapter 7. Safety, Use and Care Information„ Liquid crystal display LCD notice Caring your computer „ Be careful about where and how you workChapter 7. Safety, Use and Care Information 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 use„ Handle storage media and drives properly „ Data safetyChapter 7. Safety, Use and Care Information „ Other important tips „ Take care in setting passwordsChapter 7. Safety, Use and Care Information „ Cleaning the cover of your computer Chapter 7. Safety, Use and Care Information„ Cleaning your computer keyboard Chapter 7. Safety, Use and Care InformationChapter 7. Safety, Use and Care Information Accessibility and comfort„ Cleaning your computer display 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 coversAppendix A. Lenovo Limited Warranty „ How to obtain warranty service„ What your service provider will do to correct problems Information.” „ Replacement of a product or partAppendix A. Lenovo Limited Warranty „ Use of personal information Appendix A. Lenovo Limited Warranty„ Your additional responsibilities „ 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 Warranty1 Customer Replaceable Unit “CRU” Service „ Types of warranty serviceAppendix A. Lenovo Limited Warranty 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 ServiceUnder 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 A. Lenovo Limited Warranty5 Product Exchange Service Appendix B. Customer Replaceable Units CRUs Appendix C. Specifications SpecificationsSize Environment ƒ TemperatureAppendix 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 WMorrisville, NC U.S.A Attention Lenovo Director of Licensing Appendix D. NoticesLenovo United States, Inc 1009 Think Place - Building One Appendix D. Notices Appendix D. Notices „ Export classification notice„ Television output notice Appendix D. Notices Wireless related information„ Wireless interoperability „ 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. NoticesDanger Appendix D. NoticesThe following notice applies to all countries and regions Appendix D. Notices Electronic emissions notices„ Federal Communications Commission FCC Statement Appendix D. Notices „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada „ 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. NoticesAppendix D. Notices „ Lenovo Product Service Information„ Japanese VCCI Class B Statement Appendix D. Notices „ Japan Compliance Statement for Power line Harmonics„ Korea Class B Turkish statement of compliance Türkiye EEE Yönetmeliğine Uygunluk BeyanıWEEE and recycling statements „ General recycling statementEU WEEE Statements Appendix D. NoticesAppendix D. Notices Japan Recycling Statements„ Collecting and Recycling a Disused Lenovo Computer or Monitor Appendix D. Notices „ Disposing a Disused Battery Pack from Lenovo Notebook Computers„ Disposing of a Lenovo Computer Components Appendix D. Notices Notice on deleting data from your hard diskNotice for Users in the U.S.A ƒ Using the preinstalled recovery program, bring the hard disk back to factory-ship state Appendix D. NoticesAppendix D. Notices TrademarksIndex BluetoothIndex Index Usage environment Wireless LANIndex Page DO NOT RETURN IT TO THE STORE If your product is not working correctlyLENOVO New World. New Thinking.TM Lenovo China P/N 147002625 Printed in China