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Lenovo Y730 manual Troubleshooting, Display Problems

Models: Y730

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Lenovo IdeaPad Y730 UG V1.0_en.book Page 59 Thursday, July 3, 2008 5:48 PM

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 and the computer does not beep while starting up.

Note:

If you are not sure whether you heard any beeps, turn off the computer; then turn it on again, and listen again. If you are using an external monitor, See “Computer Screen Problems” on page 63.

If a user password is set, enter the correct password and press Enter.

If the user password prompt does not appear, the brightness level might be set to minimum brightness. Adjust the brightness level by pressing Fn + .

If the screen still remains 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.

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Lenovo Y730 manual Troubleshooting, „ Display Problems

Contents

Lenovo IdeaPad Y730 If your product is not working correctly Lenovo IdeaPad Y730 UG V1.0 coveren2-3Energy Star model information Page Explanation of Hard Disk Capacity Page Contents Contents Safety Appendix a106 Appendix B. CustomerContents IiiGetting to Know Your Computer Top ViewWireless LAN antennas Power buttonGetting to Know Your Computer Computer displayAC power adapter jack Left-side ViewGetting to Know Your Computer Fan louvers VGA portRight-side View TV-in jack Specific models only Security keyholeFront View Bass switch System status indicatorsWireless device switch Bottom View Getting to Know Your Computer Battery latch manual Battery latch spring loaded2nd Hard Disk Drive Specific models only Subwooferƒ Wireless LAN Card compartment „ Shutting Down Your computer Using Your Computer„ Putting your computer to Sleep Using the Touch Pad Using Your ComputerUsing the Keyboard „ Numeric Keypad„ Function Key Combinations Fn + PrtSc/SysRq System request Special keys and buttons „ Touch inductive panel and multi-media buttonsUsing Your Computer Touch inductive panel ~ Multi-media buttons ~„ Lenovo game zone Specific models only Using Your Computer „ 17 Numeric Keys Specific models only „ OneKey Rescue System button „ Copying files to CDs/DVDs/Blu-ray Discs Using the optical drive„ Playing CDs/DVDs/Blu-ray Disc Media Using memory cards „ Removing a memory card Using the Integrated Camera„ Inserting a memory card Using the Internet „ Using LAN port„ Using wireless LAN „ Using modem port Securing your computer „ Attaching a Security Lock Optional„ Using VeriFace „ Using Passwords To set a Supervisor Password Changing or Removing the Supervisor Password Select Set Supervisor Password, and press the Enter keyTo set a User Password Using Your Computer Changing or Removing the User Password Using Your Computer Hard Disk Passwords To set a hard disk passwordChanging or Removing the HDD Passwords Using Your Computer Installing Device Drivers Using battery and AC adapter „ Your Computer Batteries„ Checking Battery Status „ Using the AC AdapterUsing Your Computer „ Charging the Battery „ Handling the BatteryUsing Your Computer Using external devices Connecting a Universal Serial Bus USB deviceUsing external devices Connecting an Ieee 1394 device Connecting a PC card device „ Inserting a PCI Express card „ Removing a PCI Express cardConnecting an external display „ Connecting a VGA monitor„ Connecting a DVI monitor Specific models only Connecting a computer Specific models only Connecting a headphone and audio device „ Switch between headphone and S/PDIF Connecting an external microphone Connecting a Bluetooth device „ Enabling Bluetooth communicationsTroubleshooting Frequently Asked QuestionsTroubleshooting Where are the recovery discs?Troubleshooting „ Display ProblemsMy screen goes blank while the computer is on „ a Password Problem „ Keyboard ProblemsForgot my password Number appears when you enter a letter„ Sleep or Hibernation Problems Computer enters sleep mode unexpectedly„ Computer Screen Problems Screen is blankTroubleshooting Screen is unreadable or distorted Click the Advanced Settings buttonTroubleshooting Incorrect characters appear on the screen Operating time for a fully charged battery is short „ Sound Problems„ Battery Problems „ Other Problems „ a Hard Disk Drive Problem„ a Startup Problem Computer does not start from a device you want Getting Help and Service Getting Help and ServiceGetting Help and Service Getting Help on the WebGetting Help and Service Getting Help and Service Getting Help around the World Safety, Use, and Care Information Important Safety InformationSafety, 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 ComputerSafety, Use, and Care Information Safety, Use, and Care Information „ For outdoor use „ Be Gentle with Your Computer„ Carry Your Computer Properly „ 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 100101 Maintenance „ What If You are Traveling?„ Questions about Vision? 102„ General Tips for Maintenance 103104 105 106 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 107„ Exchange of a Product or Part 108109 „ Your Additional Responsibilities„ Use of Personal Information 110 „ What This Warranty Does not Cover„ Limitation of Liability 111 112 „ Dispute Resolution„ Other Rights „ European Economic Area EEA 113Warranty Information 114115 „ Types of Warranty ServiceCustomer Replaceable Unit CRU Service Appendix A. Lenovo Limited Warranty On-site Service Courier or Depot ServiceCustomer Carry-In or Mail-In Service 116Warranty Service Telephone Numbers 117118 Appendix B. Customer Replaceable Units CRUs 119Appendix C. Specifications SpecificationsEnvironment ƒ Temperature 120Appendix C. Specifications Battery121 PackAppendix D. Notices 122123 Appendix D. Notices124 „ Export classification notice„ Television output notice 125 Wireless related information„ Wireless Interoperability „ Usage Environment and Your Health 126127 „ Products with television tuner options installed „ Note to Catv system installerTV tuner information 128„ Example of antenna grounding 129130 131 Electronic Emissions Notices„ Federal Communications Commission FCC Statement 132 „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada „ German Class B Compliance Statement 133134 „ European Union Compliance Statement Class B Compliance 135„ Korea Class B 136137 Weee and Recycling Statements„ General Recycling Statement EU Weee Statements 138Japan Recycling Statements 139„ Disposing of a Lenovo Computer Components 140141 142 Trademarks 143Index 144145 IndexProblems 146147