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Lenovo Y550P manual Troubleshooting, The screen is unreadable or distorted

Models: Y550P

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Chapter 5. Troubleshooting

The screen is unreadable or distorted.

Make sure that:

The display device driver is installed correctly.

The screen resolution and color quality are correctly set.

The monitor type is correct.

Incorrect characters appear on the screen.

Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced.

A message, “Unable to create overlay window,” appears when you try to start DVD playback.

-or-

You get poor or no playback of video, DVD or game applications.

Do either of the following:

If you are using 32-bit color mode, change the color depth to 16-bit mode.

If you are using a desktop resolution over the optimum, reduce the desktop size and the color depth.

Page 57

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Lenovo Y550P manual Troubleshooting, The screen is unreadable or distorted, Incorrect characters appear on the screen

Contents

User Guide Lenovo IdeaPad Y550PFirst Edition July Copyright Lenovo ENERGY STAR model information Windows Power plan Energy Star Turn off the display After 10 minutes Table 1. ENERGY STAR power-management features, by operating systemPut 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 Using Your Computer ContentsUsing External Devices Chapter 5. TroubleshootingChapter 7. Safety, Use and Care ContentsChapter 6. Getting Help and Appendix A. Lenovo LimitedChapter 1. Getting to Know Your Computer Top viewc d e i Volume buttons Power button Wireless LAN antennasChapter 1. Getting to Know Your Computer Computer displayLeft-side view Chapter 1. Getting to Know Your Computerd e f g Security keyhole Chapter 1. Getting to Know Your ComputerFan louvers Make sure that none of the fan louvers are blocked, otherwiseRight-side view AC power adapter jackChapter 1. Getting to Know Your Computer TV-in jack specific models onlySystem status indicators Integrated wireless device switchFront view Chapter 1. Getting to Know Your ComputerChapter 1. Getting to Know Your Computer Bottom viewBattery latch - manual Battery latch - spring loadedChapter 1. Getting to Know Your Computer SubwooferChapter 2. Using Your Computer Using the touchpadb a cd „ Gestures Chapter 2. Using Your Computer„ Palm Check PinchUsing the keyboard Chapter 2. Using Your Computer„ Numeric keypad „ Function key combinations Chapter 2. Using Your ComputerFn + F1 Put your computer in sleep mode Chapter 2. Using Your ComputerChapter 2. Using Your Computer „ Touch inductive panel and volume buttonsSpecial keys and buttons d e f gVolume buttons ~ Chapter 2. Using Your ComputerTouch inductive panel ~ Lenovo SlideNav barUsing memory cards Using the optical driveChapter 2. Using Your Computer Your computer comes with an optical drive, such as a CD/DVD driveOnly use the memory card types listed above for more information on usage, read the instructions shipped with the memory card Chapter 2. Using Your ComputerUsing lenovo remote control specific models only Using the integrated cameraChapter 2. Using Your Computer Using the internet „ Using RJ-45 portChapter 2. Using Your Computer Chapter 2. Using Your Computer „ Using wireless LANChapter 2. Using Your Computer Securing your computer„ Attaching a security lock optional „ Using VeriFace „ Using passwordsChapter 2. Using Your Computer Using battery and AC adapter Installing device drivers„ Checking battery status Chapter 2. Using Your ComputerChapter 2. Using Your Computer „ Using the AC adapter„ Handling the battery „ Charging the batteryChapter 2. Using Your Computer Dangerƒ Replace only with a battery of the type recommended by Lenovo Chapter 2. Using Your ComputerDanger DangerConnecting a Universal Serial Bus USB device Chapter 3. Using External DevicesChapter 3. Using External Devices Chapter 3. Using External Devices Connecting an eSATA/USB port deviceConnecting a PC card device Chapter 3. Using External DevicesOnly use the ExpressCard/34 module „ Inserting an ExpressCard/34 module Chapter 3. Using External Devices„ Removing an ExpressCard/34 module 1 Push the ExpressCard/34 module until you hear a clickConnecting an external display „ Connecting a VGA monitorChapter 3. Using External Devices Chapter 3. Using External Devices „ Connecting an HDMI monitorChapter 3. Using External Devices Connecting a headphone and audio deviceListening to music at high volume over extended periods of time may damage your hearing Chapter 3. Using External DevicesChapter 3. Using External Devices Connecting an external microphone„ Enabling Bluetooth communications Chapter 3. Using External DevicesConnecting a Bluetooth device specific models only Chapter 4. OneKey Rescue System OneKey Rescue System„ Introduction „ Using Lenovo OneKey Recovery Within Windows operating system For more instructions, see the help file of Lenovo OneKey RecoveryChapter 4. OneKey Rescue System Chapter 4. OneKey Rescue System „ Using Lenovo OneKey Rescue System Without Windows operating systemFrequently Asked Questions Chapter 5. TroubleshootingWhere are the recovery discs? Chapter 5. TroubleshootingWhere can I find warranty information? How can I install the device drivers?When do I need to restore the system to the factory status? Chapter 5. Troubleshooting„ Display problems TroubleshootingChapter 5. Troubleshooting When I turn on the computer, nothing appears on the screenChapter 5. Troubleshooting My screen goes blank while the computer is onƒ Touch the touch pad ƒ Press any key on the keyboard „ Keyboard problems „ A Password problemChapter 5. Troubleshooting I forgot my password„ Sleep or hibernation problems Chapter 5. TroubleshootingThe computer enters sleep mode unexpectedly „ Computer screen problems Chapter 5. TroubleshootingThe screen is blank The screen is unreadable or distorted Chapter 5. TroubleshootingIncorrect characters appear on the screen You get poor or no playback of video, DVD or game applications„ Battery problems „ Sound problemsChapter 5. Troubleshooting Your computer operates after the battery status indicator shows empty„ A startup problem „ A hard disk drive problem„ OneKey Rescue System problems Chapter 5. TroubleshootingChapter 5. Troubleshooting „ Other problemsFail to restore system partition to factory default Your computer does not respondGetting help and service Chapter 6. Getting Help and ServiceChapter 6. Getting Help and Service Getting help on the WebCalling the customer support center The following items are not covered Chapter 6. Getting Help and Serviceƒ Machine Type and Model Chapter 6. Getting Help and ServiceWarranty Service Telephone Numbers Chapter 6. Getting Help and ServiceLenovo warranty service telephone numbers Getting help around the worldImportant safety information Chapter 7. Safety, Use and Care Information„ Conditions that require immediate action Chapter 7. Safety, Use and Care InformationChapter 7. Safety, Use and Care Information „ Safety guidelinesChapter 7. Safety, Use and Care Information „ Service and upgradesChapter 7. Safety, Use and Care Information „ Power cords and power adaptersDanger DangerProtect 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 overheating Chapter 7. Safety, Use and Care Information„ Extension cords and related devices Chapter 7. Safety, Use and Care Information„ Plugs and outlets Danger„ Power supply statement Chapter 7. Safety, Use and Care InformationDanger „ Lithium coin cell battery notice Chapter 7. Safety, Use and Care InformationDanger Chapter 7. Safety, Use and Care Information „ Heat and product ventilationDanger ƒ Keep the cover closed whenever the computer is plugged in Chapter 7. Safety, Use and Care Information„ CD and DVD drive safety Chapter 7. Safety, Use and Care InformationDanger „ Electrical current safety information Chapter 7. Safety, Use and Care InformationDanger To connect 1. Turn everything OFF Chapter 7. Safety, Use and Care Information„ Laser compliance statement Chapter 7. Safety, Use and Care InformationChapter 7. Safety, Use and Care Information When a CD or DVD drive is installed, note the following handling instructionsDanger Chapter 7. Safety, Use and Care Information „ Liquid crystal display LCD noticeDanger „ Be careful about where and how you work Chapter 7. Safety, Use and Care InformationCaring your computer ƒ Place liquids away from your computer to avoid spills, and keep your computer away from water to avoid the danger of electrical shock Chapter 7. Safety, Use and Care InformationNot all such appliances cause a significant electrostatic charge Chapter 7. Safety, Use and Care Information„ Be gentle with your computer Chapter 7. Safety, Use and Care Information„ Carry your computer properly „ For outdoor use„ Data safety Chapter 7. Safety, Use and Care Information„ Handle storage media and drives properly „ Take care in setting passwords Chapter 7. Safety, Use and Care Information„ Other important tips Chapter 7. Safety, Use and Care Information „ Cleaning the cover of your computerChapter 7. Safety, Use and Care Information „ Cleaning your computer keyboardAccessibility and comfort „ Cleaning your computer displayChapter 7. Safety, Use and Care Information „ Ergonomic information Chapter 7. Safety, Use and Care InformationGeneral 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 posture Chapter 7. Safety, Use and Care InformationChapter 7. Safety, Use and Care Information Maintenance„ What if you are traveling? „ Questions about vision?Chapter 7. Safety, Use and Care Information „ General tips for maintenanceƒ Update device drivers and BIOS when needed Chapter 7. Safety, Use and Care Informationƒ If required, you can find your country’s Customer Support Center at the following Web address http//consumersupport.lenovo.com Chapter 7. Safety, Use and Care Information„ What this warranty covers Appendix A. Lenovo Limited Warranty„ How to obtain warranty service „ What your service provider will do to correct problemsAppendix A. Lenovo Limited Warranty „ Replacement of a product or part Appendix A. Lenovo Limited WarrantyInformation.” Appendix A. Lenovo Limited Warranty „ Your additional responsibilities„ Use of personal information Appendix A. Lenovo Limited Warranty „ What this warranty does not cover„ Limitation of liability Appendix A. Lenovo Limited WarrantyAppendix A. Lenovo Limited Warranty „ Dispute resolution„ Other rights Appendix A. Lenovo Limited Warranty„ European Economic Area EEA „ Lenovo Turkey addressAppendix A. Lenovo Limited Warranty Warranty information„ Types of warranty service Appendix A. Lenovo Limited Warranty1 Customer Replaceable Unit “CRU” Service 2 On-site Service Appendix A. Lenovo Limited WarrantyUnder 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 ServiceAppendix A. Lenovo Limited Warranty 5 Product Exchange 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 B. Customer Replaceable Units CRUs Specifications Appendix C. SpecificationsEnvironment ƒ Temperature SizeBattery ƒ Lithium-ion Li-Ion battery pack Appendix C. SpecificationsPower source AC adapter ƒ Input rating of the AC adapter 100-240 V ac, 50 to 60 Hz ƒ 90 WAppendix D. Notices Lenovo United States, Inc 1009 Think Place - Building OneMorrisville, NC U.S.A Attention Lenovo Director of Licensing Appendix D. Notices „ Export classification notice „ Television output noticeAppendix D. Notices Wireless related information „ Wireless interoperabilityAppendix D. Notices Appendix D. Notices „ Usage environment and your healthAppendix D. Notices ƒ Using the integrated wireless cards on board of airplanes, or in hospitals„ Note to CATV system installer „ Products with television tuner options installedTV tuner information Appendix D. NoticesAppendix D. Notices „ Example of antenna groundingAppendix D. Notices The following notice applies to all countries and regionsDanger Electronic emissions notices „ Federal Communications Commission FCC StatementAppendix D. Notices „ Industry Canada Class B Emission Compliance Statement „ Avis de conformité à la réglementation d’Industrie CanadaAppendix D. Notices Appendix D. Notices „ German Class B Compliance StatementInformationen in Hinsicht EMVG Paragraf 4 Abs. 1 Appendix D. NoticesAppendix D. Notices „ European Union Compliance Statement Class B Compliance„ Lenovo Product Service Information „ Japanese VCCI Class B StatementAppendix D. Notices „ Japan Compliance Statement for Power line Harmonics „ Korea Class BAppendix D. Notices Türkiye EEE Yönetmeliğine Uygunluk Beyanı Turkish statement of complianceWEEE and recycling statements „ General recycling statementAppendix D. Notices EU WEEE StatementsJapan Recycling Statements „ Collecting and Recycling a Disused Lenovo Computer or MonitorAppendix D. Notices „ Disposing a Disused Battery Pack from Lenovo Notebook Computers „ Disposing of a Lenovo Computer ComponentsAppendix D. Notices Notice on deleting data from your hard disk Notice for Users in the U.S.AAppendix D. Notices Appendix D. Notices ƒ Using the preinstalled recovery program, bring the hard disk back to factory-ship stateTrademarks Appendix D. NoticesBluetooth IndexIndex Index Wireless LAN IndexUsage environment Page If your product is not working correctly LENOVODO NOT RETURN IT TO THE STORE Lenovo China P/N 147002625 Printed in China New World. New Thinking.TM