Lenovo S400U, 59RF0035 manual Troubleshooting, Display problems

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Chapter 6. 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 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.)

•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 the original factory contents using 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 IdeaPad S300/S400/S400u/S405 Regulatory Notice Second Edition August Copyright Lenovo Contents Page Getting to know your computer Top viewGetting to know your computer Integrated TouchpadRJ-45 port Left-side viewFan louvers Hdmi portUSB 2.0 port Right-side viewJack Front view Bottom view „ Reading the manuals „ Connecting to the powerLearning the basics „ Turning on the computer„ Removing the battery pack „ Checking battery status„ Charging the battery „ Handling the battery Right-click area Using the touchpadLeft-click area Hotkeys „ Setting hotkey mode Inserting a memory card „ Using memory cards not suppliedConnecting external devices Removing a memory card„ Connecting USB devices „ Connecting Bluetooth enabled devices on select models Enabling Bluetooth communications on your computer„ Novo button a Special keys and buttonsSystem status indicators Power status indicator Battery status indicatorLearning the basics Symbol Indicator Meaning Status „ Using VeriFace Securing your computerStart screen Desktop Configuring the operating system for the first timeStarting to use Windows Charms Search charmStarting to use Windows Start charm Settings charmShare charm Devices charm„ Putting your computer to sleep „ Shutting down the computer Help and support „ Hardware connection Cable Connecting to the InternetWired connection „ Software configuration Connecting to the InternetWireless connection Wi-Fi WiMAXConnecting to a wireless network „ Connecting to wireless LANEnabling wireless connection „ Restoring Lenovo OneKey Recovery system„ Backing up the system partition Frequently asked questions Troubleshooting„ Drivers and preinstalled software „ Finding informationTroubleshooting „ Lenovo OneKey Recovery system„ Bios setup utility When do I need to change the boot mode? „ Getting helpTroubleshooting Display problemsTroubleshooting Bios password problems Sleep problemsDisplay panel problems WorkHard disk drive problem Troubleshooting Sound problemsBattery problems Troubleshooting Other problems RespondTrademarks Page V2.0en-US