Lenovo V480C, V580C Computer screen problems, An ac power adapter problem, Startup problem

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The battery pack cannot be charged.

You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the computer and allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced.

An ac power adapter problem

Print these instructions now and keep it with your computer for reference later.

The ac power adapter is connected to the computer and the working electrical outlet, but the power adapter (power plug) icon is not displayed on the taskbar. Also the ac power indicator does not light up.

Do the following:

1.Make sure that the connection of the ac power adapter is correct. For instructions on connecting the ac power adapter, see Setup Poster that comes with your computer.

2.If the connection of the ac power adapter is correct, turn off the computer, then disconnect the ac power adapter and remove the main battery.

3.Reinstall the battery and reconnect the ac power adapter, then turn on the computer.

4.If the power adapter icon still is not displayed on the taskbar and the ac power indicator does not light up, have the ac power adapter and your computer serviced.

A startup problem

Print these instructions now and keep it with your computer for reference later.

The Microsoft® Windows operating system does not start.

Use the OneKey Recovery Pro program to help solve or identify your problem. For details, refer to the instructions in Chapter 6 “OneKey Recovery Pro” on page 29.

Sleep and hibernation problems

Print these instructions now and keep it with your computer for reference later.

A critical low-battery error occurs, and the computer immediately turns off.

The battery power is getting low. Connect the ac power adapter to the computer and plug it into an electrical outlet, or replace the battery with a charged one.

The computer enters sleep mode immediately after the power-on self-test.

Make sure that:

•The battery is charged.

•The operating temperature is within the acceptable range. refer to Chapter 8 “Preventing problems” on page 53.

Computer screen problems

Print these instructions now and keep it with your computer for reference later.

The screen is blank.

Do any of the following:

•If you are using the ac power adapter or using the battery, and the battery status indicator is on, press Fn + up arrow to increase the screen brightness.

•If the power indicator is in blinking, press the power button to resume from the sleep mode.

58User Guide

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Contents User Guide Lenovo V480, V480c, V580, and V580cSafety and Warranty Guide Regulatory Notice Contents Appendix C. Notices Prevent your computer from getting wet Read this firstProtect yourself from the heat that your computer generates Protect the cables from being damagedConditions that require immediate action Important safety informationProtect your computer and data when moving it Handle your computer gentlySafety guidelines Service and upgradesPower cords and power adapters Extension cords and related devicesExternal devices Power supply statementPlugs and outlets General battery notice Rechargeable battery noticeLithium coin cell battery notice Heat and product ventilation Electrical current safety information CD and DVD drive safetyLiquid crystal display LCD notice Using headphones or earphonesLaser compliance statement Additional safety information Xiv User Guide Getting to know your computer Top viewOneKey Recovery Pro program button Wireless module antennasPower button Status indicatorsLeft-side view Right-side view Front viewBottom view Status indicators Features Power and battery status indicatorSpecifications Lenovo V480 and V480cLenovo V580 and V580c User Guide Using your computer Frequently asked questionsConfiguring the operating system Tips on using your computerConnecting to power Putting your computer into sleep mode or shutting it downUsing the ac power adapter Using the ac power adapter and the battery packChecking the battery status Connecting the ac power adapterHandling the battery Charging the batteryMaximizing the battery life Tips on using the ac power adapterUsing the touch pad or click pad Using the touch padNumeric keypad Using the keyboardUsing the click pad V480 and V480cOneKey Recovery Pro program button V580 and V580cConnecting to external devices Function key combinationsUsing Bluetooth Using the media card readerUsing USB connectors Using the Nvidia Optimus Graphics feature Switching the Graphics Processing UnitHardware connection Connecting to the networkWired connection CableSoftware configuration Wireless connectionConnecting to the network User Guide Ergonomic information Accessibility and comfortYou and your computer What if you are traveling? Using the Active Protection System Using passwordsUsing a fingerprint reader SecurityUser Guide OneKey Recovery Pro Solving recovery problemsUser Guide Static electricity prevention Replacing the batteryReplacing devices Replacing the backup battery Replacing devices Lenovo V580 and V580c Prerequisites for the procedure Replacing the hard disk driveUser Guide Lenovo V580 and V580c Replacing the keyboard Replacing devices Lenovo V580 and V580c Replacing devices Replacing a memory module Replacing devices Lenovo V580 and V580c Replacing the mSATA solid state drive User Guide Lenovo V480 and V480c Lenovo V580 and V580c Replacing devices Replacing the optical drive Lenovo V580 and V580c User Guide Preventing problems General tips for preventing problemsBe gentle with your computer Be careful about where and how you workTaking care of your computer Carry your computer properlyHandle storage media and drives properly Take care in setting passwordsClean the cover of your computer Data protectionRegister your computer Cleaning your computer keyboardCleaning your computer display Be sure not to modify your computerBattery and power problems Troubleshooting computer problemsTroubleshooting Battery problemsStartup problem Computer screen problemsAn ac power adapter problem Sleep and hibernation problemsProblems with drives and other storage devices Hard disk drive problemsOptical drive problems OneKey Rescue system problemsPassword problem Your computer does not respond Sound problemOther problems Computer does not start from a device you wantUser Guide Appendix A. Regulatory information Wireless related informationWireless interoperability Usage environment and your health Export classification noticeElectronic emission notices Industry Canada Class B emission compliance statement DeutschlandUser Guide Japan recycling statements Appendix B. Weee and recycling statementsChina Weee statement EU Weee statements Recycling information for Brazil Disposing of a Lenovo computer componentsBattery recycling information for the European Union User Guide Appendix C. Notices Trademarks Index User Guide
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