Lenovo 59373006, 59373026 manual Troubleshooting, Display problems

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Chapter 4. Troubleshooting

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

Display problems

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

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

My screen goes blank while the computer is on.

•If the screen is blank, make sure that:

-The battery is installed correctly.

-The AC power 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.)

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

•Restore backed-up files to your Windows environment or the entire contents of your hard disk to its original factory contents using the Lenovo OneKey Recovery system. If you still see only the cursor on the screen, have the computer serviced.

•Your screen saver or power management may be enabled. Do one of the following to exit from the screen saver or to resume from sleep mode:

-Touch the touchpad.

-Press any key on the keyboard.

-Press the power button.

-Press F9 ( ) to confirm whether the backlight for the LCD screen has been turned off.

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Contents Lenovo G400s/G405s/G400s Touch G500s/G505s/G500s Touch Regulatory Notice Contents Page Getting to know your computer G400s/G405s„ G400s Touch G500s/G505s „ G500s Touch System status indicators Built-in microphone Touchpad Getting to know your computer IntegratedG500s/G505s/ G500s Touch „ Using the keyboard Numeric keypad G500s/G505s/G500s Touch„ Keyboard function keys G400s/G405s/G400s TouchFunction key combinations G400s/G405s/G400s Touch G500s/G505s/G500s TouchFn + PgDn G400s Fn + PgDn G500sVentilation slots VGA portRJ-45 port Hdmi port„ Connecting USB devices „ Connecting a Bluetooth device Enabling Bluetooth and Wlan communications on your computerRight-side view USB portIndicators Symbol Indicator status MeaningSystem status „ Using memory cards not supplied Inserting a memory cardRemoving a memory card „ G400s/G405s/G400s Touch „ G500s/G505s/G500s Touch Page Configuring the operating system for the first time Starting to use WindowsStart screen DesktopSearch charm Starting to use WindowsSettings charm Share charmStart charm Devices charm„ Putting your computer to sleep „ Shutting down the computer „ Multi-touch gestures NumberFrequently used gestures Tasks performed Fingers Used Pinch Swipe Enabling wireless connection Connecting to a wireless networkHelp and support Lenovo OneKey Recovery system „ Backing up the system partition„ Restoring Lenovo OneKey Recovery system Troubleshooting „ Drivers and preinstalled software „ Finding information „ Lenovo OneKey Recovery system „ Bios setup utilityTroubleshooting When do I need to change the boot mode? „ Getting helpTroubleshooting Display problemsTroubleshooting Bios password problems Sleep problemsDisplay panel problems WorkTroubleshooting Sound problems Battery problemsHard disk drive problem OneKey Recovery system problemsTroubleshooting Other problems RespondReplacing the battery Appendix. CRU instructionsReplacing memory Appendix. CRU instructionsAppendix. CRU instructions Appendix. CRU instructions Replacing the wireless LAN card Appendix. CRU instructions Removing the optical disc drive Trademarks Page En-US Rev. CT01