Lenovo G410, G400 warranty Troubleshooting, Display Problems

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Lenovo EVEREST UG.book Page 39 Friday, August 17, 2007 5:40 PM

Solving Computer Problems

Troubleshooting

If you do not find your problem here, see Chapter 3. The following section only describes problems that might prevent you from accessing the comprehensive information in Chapter 3.

Display Problems

Problem: 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 42.

Solution: If a user password is set, press any key to display the user password prompt; then type 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. (Turn on the Power button again for confirmation.)

If these items are properly set, and the screen remains blank, have the computer serviced.

Problem: When I turn on the computer, nothing appears on the screen, but I hear two or more beeps.

Solution: Make sure that the memory card is installed correctly. If it is, but the screen is still blank, and you hear five beeps, have the computer serviced.

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

Solution: 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.

Chapter 4. Solving computer problems 39

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Contents Lenovo 3000 G400 and G410 User Guide Page Contents Appendix D. Notices Read This First Vi Lenovo 3000 G400 and G410 User Guide Read This First Page This Guide and Other Publications Finding InformationFinding Information Important Tips Be Careful about Where and How You WorkCaring for Your Computer Carry Your Computer Properly Caring for Your ComputerBe Gentle with Your Computer Other Important Tips Take Care in Setting PasswordsHandle Storage Media and Drives Properly Cleaning Your Computer Keyboard Cleaning the Cover of Your ComputerCleaning Your Computer Display Lenovo Everest UG.book Page 8 Friday, August 17, 2007 540 PM Getting Started Top View Lenovo 3000 G400 and G410 Getting StartedKnowing the Parts Num Lock Power buttonComputer display Scroll LockTouch pad Novo buttonCustom button Mute buttonSecurity keyhole AC power adapter jackWireless LAN*/Bluetooth* switch Right-side ViewLeft-side View PCI Express card slot USB 2.0 port left sideExternal microphone jack External headphone jackHard Disk Drive compartment Battery latch spring loadedBattery pack Bottom ViewFront View Ergonomic Information Accessibility and ComfortQuestions about Vision? What If You are Traveling?Numeric Keypad BasicsSpecial Keys and Buttons Function Key Combinations Mute Button Using the Touch PadSystem-status Indicators Status IndicatorsBattery Status Indicator Power-status indicatorsGeneral Tips for Preventing Problems Preventing ProblemsGetting Started Sequence of installation Path of drivers Installing Device DriversClick the Notification Area tab Learn How to Achieve All Day ComputingChecking Battery Status Your Computer BatteriesUsing the AC Adapter Handling the Battery Charging the BatteryAttaching a Mechanical Lock Using PasswordsSecurity Changing or Removing the User Password To set a User PasswordChanging or Removing the Supervisor Password To set a Supervisor PasswordHard Disk Passwords Changing or Removing the HDD Passwords Getting Started Solving Computer Problems Frequently Asked Questions Solving Computer ProblemsDisplay Problems TroubleshootingKeyboard Problems Password ProblemSleep or Hibernation Problems Click Advanced Settings Computer Screen ProblemsBattery Problems Other Problems Hard Disk Drive ProblemStartup Problem Upgrading and Replacing Devices Replacing the BatteryUpgrading the Hard Disk Drive Replacing the BatteryHandling a hard disk drive Upgrading the Hard Disk DriveUpgrading the Hard Disk Drive Replacing Memory Replacing Memory Replacing Memory Replacing Memory Getting Help on the Web Calling the Customer Support Center Getting Help and ServiceGetting Help and Service Getting Help and Service Getting Help around the World Getting Help and Service Type Service Appendix A. Warranty InformationWarranty Information Product or Country or Region Type Machine Warranty PeriodCourier or Depot Service Types of Warranty ServiceCustomer Replaceable Unit CRU Service On-site ServiceWarranty Service Telephone Numbers Lenovo Warranty Service Telephone NumbersPage Appendix B. Customer Replaceable Units CRUs Page Display Appendix C. Features and SpecificationsFeatures Storage deviceExpressCard slot FeaturesWireless features InterfaceSpecifications SpecificationsSpecifications Appendix D. Notices Television output notice Wireless related informationWireless Interoperability Usage Environment and Your Health FAXFederal Communications Commission FCC Statement Electronic Emissions NoticesJapanese Vcci Class B Statement Industry Canada Class B Emission Compliance StatementAvis de conformité à la réglementation d’Industrie Canada European Union EMC Directive Conformance StatementGeneral Recycling Statement EU Weee StatementsJapan Recycling Statements Lenovo 3000 G400 and G410 User Guide Page IBM Lotus Software Offer U. S. Or Canada Call Latin American Countries Asia Pacific Countries TrademarksEuropean Countries Index Part Number