Lenovo B560 manual Troubleshooting Sleep or hibernation problems, Computer screen problems

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Chapter 5. Troubleshooting

Sleep or hibernation problems

The critical low-battery error message appears, and the computer immediately turns off.

The computer enters sleep mode immediately after Power-on self-test (POST).

•The battery power is getting low. Connect the AC adapter to the computer, or replace the battery with a fully charged one.

•Make sure that:

-The battery is charged.

-The operating temperature is within the acceptable range. See “Chapter 2. Use and care Information” of Lenovo Safety and General Information Guide.

Note: If the battery is charged and the temperature is within range, have the computer serviced.

The computer does not return from sleep mode and the computer does not work.

•If the computer does not return from sleep mode, it may have entered hibernation mode automatically because the battery is depleted. Check the power 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 and the battery.

Computer screen problems

The screen is blank.

The screen is unreadable or distorted.

Incorrect characters appear on the screen.

•Do the following:

-If you are using the AC adapter, or using the battery, and the battery status indicator is on, press Fn + ↑ 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.”

-Press Fn+F2 to confirm whether the LCD screen has been turned off.

•Make sure that:

-The display device driver is installed correctly.

-The screen resolution and color quality are correctly set.

-The monitor type is correct.

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

Sound problems

No sound can be heard from the

• Make sure that:

speaker even when the volume is

- The Mute function is off.

turned up.

-

The headphone jack is not used.

 

-

Speakers are selected as the playback device.

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Contents Lenovo B560 Regulatory Notice Contents Page Getting to know your computer Top viewSelect models only Wireless module Antennas Select Models only Computer display Power buttonIndicators Built-in microphone Getting to know your computerUSB port Right-side view Headphone jackMemory card slot Battery pack SpeakersGetting to know your computer „ Conncting to the power „ Configuring the operating systemLearning the basics „ Reading the manuals„ Shutting down your computer Learning the basics„ Checking battery status „ Charging the battery„ Removing the battery pack „ Handling the batteryLeft click button Right click button„ Numeric keypad „ Function key combinationsLearning the basics Connecting external devices „ Using memory cards not supplied„ Connecting a universal serial bus USB device Inserting a memory card„ Connecting a Bluetooth device Select models only Enabling Bluetooth communications on your computerSpecial keys and buttons „ OneKey Rescue system buttonC d G h „ Using passwords Securing your computer„ Attaching a security lock not supplied „ Fingerprint reader Select models onlyConnecting to the Internet „ Software configuration„ Hardware connection Cable„ Using Wi-Fi/WiMAX Select models only Connecting to the InternetEnabling wireless connection Software configuration„ Using Mobile Broadband Select models only Connecting to the Internet Inserting the SIM card Connecting to the Internet Removing the SIM card „ Introduction OneKey Rescue systemOneKey Rescue system Troubleshooting Frequently asked questionsTroubleshooting When do I need to restore the system to the factory status?Display problems Password problemSound problems Troubleshooting Sleep or hibernation problemsComputer screen problems Troubleshooting Battery problems Hard disk drive problemStartup problem OneKey Rescue system problemsTroubleshooting Other problems Your computer does not respondPage Handling a hard disk drive Replacing the hard disk driveAppendix A. CRU instructions Appendix A. CRU instructions Appendix A. CRU instructions Appendix A. CRU instructions Sdram Page Appendix A. CRU instructions Removing the optical drive Appendix B. Lenovo limited warranty „ What this warranty covers„ How to obtain warranty service „ What your service provider will do to correct problems„ Your additional responsibilities „ Replacement of a product or partAppendix B. Lenovo limited warranty „ Limitation of liability „ What this warranty does not cover„ Use of personal information „ European Economic Area EEA „ Dispute resolution„ Other rights Warranty information „ Types of warranty service Appendix B. Lenovo limited warranty Appendix C. Product specific Notices Energy star informationAppendix C. Product specific Notices WindowsElectronic emissions notices „ Federal Communications Commission FCC Statement„ German Class B Compliance Statement „ Industry Canada Class B Emission Compliance Statement„ Avis de conformité à la réglementation d’Industrie Canada „ European Union Compliance Statement Class B Compliance Appendix D. Specifications Model Name B560 Machine Type 20068 Form FactorSystem PortsTrademarks Problems IndexDo not Return IT to the Store If your product is not working correctlyNew World. New Thinking.TM
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