Lenovo 4376XC2, 59351627, 59343695, N580, 59RF0029, U310, U410 manual Computer screen problems, Work

Page 39

Chapter 5. Troubleshooting

The computer does not	• If the computer does not return from sleep mode, it
return from sleep mode and	may have entered hibernation mode automatically
the computer does not	because the battery is depleted. Check the power
work.	indicator.
	• If your computer is in sleep mode, connect the AC
	adapter to the computer, then press any key or the
	power button.
	• If your computer is in hibernation mode or power-off
	state, connect the AC adapter to the computer, then
	press the power button to resume operation.

Note: If the system still does not return from sleep mode, your system has stopped responding, and you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the computer, press and hold the power button for 4 seconds or more. If the computer is still not reset, remove the AC adapter.

Computer screen problems

The screen is blank.	• Do the following:
	- If you are using the AC adapter, or using the
	battery, and the battery status indicator is on, press
	to make the screen brighter.
	- If the power indicator is in blinking, press the
	power button to resume from the sleep mode.
	- If the problem persist, follow the solution in the
	following problem “The screen is unreadable or
	distorted.”

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	• Did you install the operating system or programs
on the screen.	correctly? If they are installed and configured
	correctly, have the computer serviced.

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Image 39

Contents Lenovo IdeaPad U310/U410 Regulatory Notice First Edition January Copyright Lenovo Contents Page Getting to know your computer „ U310Top view Getting to know your computer „ U410Getting to know your computer Integrated TouchpadSpeakers Left-side view Microphone Built-inBuilt-in microphone Combo audio jack Right-side viewGetting to know your computer Hdmi port Front view U310 U410Bottom view Louvers „ Reading the manuals „ Conncting to the power„ Configuring the operating system Learning the basics„ Shutting down your computer Putting your computer into sleep stateLearning the basics „ Checking battery status „ Charging the battery„ Battery Protection Touchpad Left-click area Right-click area Using the touchpadUsing the keyboard „ Function key combinationsFn + End „ Hotkeys Using hotkeys Setting hotkey mode „ Using memory cards not supplied Inserting a memory cardRemoving a memory card „ Connecting USB devices Enabling Bluetooth communications on your computer „ Connecting Bluetooth enabled device on select modelsSpecial keys and buttons „ OneKey Rescue system button aPower status indicator Battery status indicator System status indicatorsLearning the basics Symbol Indicator Meaning Status Securing your computer „ Using passwordsConnecting to the Internet Wired connection„ Hardware connection Connecting to the Internet „ Software configurationSoftware configuration Wireless connectionHardware connection OneKey Rescue system „ IntroductionOneKey Rescue system OneKey Rescue system „ Creating a recovery discsInsert additional recordable discs when prompted Frequently asked questions Troubleshooting Where can I find warranty information? TroubleshootingDisplay problems TroubleshootingSleep or hibernation problems Troubleshooting Password problemsWork Computer screen problemsStartup problem Troubleshooting Sound problemsBattery problems Hard disk drive problemOther problems Trademarks Page New World. New Thinking.TM

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