Preventing problems | Lenovo 20CD0033US specs

1.Gently wipe the display with a dry, soft lint-free cloth. If you see a scratchlike mark on your display, it might be a stain transferred from the keyboard or the TrackPoint pointing stick when the cover was pressed from the outside.

2.Wipe or dust the stain gently with a soft, dry cloth.

3.If the stain remains, moisten a soft, lint-free cloth with water or a 50-50 mixture of isopropyl alcohol and water that does not contain impurities.

Note: Avoid spraying cleaner directly onto the display or the keyboard.

4.Wring out as much of the liquid as you can.

5.Wipe the display again; do not let any liquid drip into the computer.

6.Be sure to dry the display before closing it.

Chapter 8. Preventing problems 79

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Lenovo 20CD0033US manual Preventing problems

Contents

User Guide First Edition November Copyright Lenovo Safety, Warranty, and Setup Guide Regulatory Notice Contents Preventing problems Protect yourself from the heat that your computer generates Read this firstPrevent your computer from getting wet Protect the cables from being damaged Protect your computer and data when moving it Important safety informationHandle your computer gently Carry your computer carefully Safety guidelines Service and upgradesConditions that require immediate action Power cords and power adapters Extension cords and related devices Power supply statementPlugs and outlets Vii General battery notice Built-in rechargeable battery noticeExternal devices Heat and product ventilation Lithium coin cell battery notice Electrical current safety information Using headphones or earphonesLiquid crystal display LCD notice Additional safety information Xii User Guide Locating computer controls, connectors, and indicators Product overviewFront view Camera System status indicator illuminated ThinkPad logoMicrophones Ambient light sensor Power button Right-side viewTablet Digitizer Pen on some models USB 3.0 connector Volume control buttonsMini Hdmi connector Screen rotation lock button Ac power connector Lenovo OneLink connector Always On USB 3.0 connectorLeft-side view Audio connector Emergency reset holeBottom view Status indicators Rear viewFan louvers Machine type and model label Locating important product information Genuine Microsoft label FCC ID and IC Certification information Features Specifications Operating environment Lenovo programsActive Protection System Lenovo Settings Client Security SolutionLenovo Solution Center Password Manager User Guide Registering your computer Using your computer Is getting connected in different locations a challenge? Frequently asked questions Using the Tablet Digitizer Pen Using the tablet buttons Using the multi-touch screen Press and hold TapDrag Swipe or slide Tasks Touch gestures touch models only Mouse actions Tasks Touch gestures touch models only Mouse actions Display angle for each operating mode Operating modesRotating the computer display Stand mode Tablet mode Tent mode Stand mode User Guide Tablet mode Tips on using your computer in tablet mode Tent mode Turning the computer into tent mode from tablet mode Special keys Turning the computer into stand mode from tent mode Function keys Windows key Using the keyboard Customizing the keyboard Behavior of the keyboard Using the ThinkPad pointing device Using the TrackPoint pointing stickUsing the ThinkPad trackpad Checking the battery status Power managementCustomizing the ThinkPad pointing device Click Hardware and Sound Mouse ThinkPad Charging the battery Using the ac power adapterConnecting the ac power adapter Tips on using the ac power adapter Maximizing the battery life Managing the battery powerPower-saving modes Wireless connections Connecting to the networkUsing the wireless LAN connection Wireless off Using the NFC connection Using the Bluetooth connectionTips for using the wireless LAN feature Select Send To Bluetooth Devices Changing display settings Using an external monitorPresentations and multimedia Using dual display Using a projectorChanging the color settings Considerations for connecting an external monitor Using the Duplicate or Extend desktop function Using audio featuresConsiderations for using the Extend desktop function Enabling the Duplicate or Extend desktop function Using a flash media card Using the cameraConfiguring for sound recording Configuring camera settings Installing a flash media card Click Hardware and SoundRemoving a flash media card Accessibility and comfort You and your computerErgonomic information Comfort Accessibility information Travel tips Traveling with your computerAssistive technologies Screen-reader technologies Travel accessories Typing passwords Using passwordsPower-on password Security Setting, changing, or removing a power-on password Supervisor password Setting, changing, or removing a supervisor password User hard disk password Hard disk passwordsMaster hard disk password Setting a hard disk password Hard disk security Tips on using the hard disk passwords Setting the security chip Using Windows BitLocker Drive EncryptionSetting the security chip Tips on using the security chip Protecting data against viruses Using firewalls Recovery overview Resetting your computer to the factory default settingsRefreshing your computer Using the advanced startup options Creating and using recovery mediaCreating recovery media Using recovery media User Guide Enhancing your computer Finding ThinkPad optionsThinkPad OneLink Dock Front view Rear view User Guide Installing the Windows 8.1 operating system Advanced configuration Installing device drivers Using the ThinkPad Setup programCountry or region Code Enabled Config menuDisabled Main menu Auto PowerKeyboard/Mouse Display Beep and Alarm Date and Time menuSecurity menu Enabled At unattended boot, a password Menu item Submenu item Selection Comments Password Bios ROM Strings Reporting Disabled, the Security Chip optionSmbios Reporting Smbios Uefi Bios Update Option Virtualization Port Access Defaults is Enabled Secure BootStartup menu Menu item Submenu item Selection Comments Anti-Theft UEFI/Legacy Boot Both if OS Optimized Defaults Menu item Selection Comments BootIs Disabled Following UEFI/Legacy Boot Priority Using system management Updating the Uefi BiosBoot Order Lock Disabled Restart menu Preboot eXecution Environment Desktop Management InterfaceAsset ID Eeprom General tips for preventing problems Preventing problems Getting the latest drivers using System Update Making sure device drivers are currentGetting the latest drivers from the Web site Taking care of your computer Be careful about where and how you workBe gentle with your computer Carry your computer properly Taking care in setting passwords Cleaning the cover of your computerCleaning your computer keyboard Cleaning your computer display Preventing problems User Guide Diagnosing problems Troubleshooting computer problemsTroubleshooting Computer stops responding Error messages Spills on the keyboardIf you spill something on your computer Troubleshooting computer problems Errors without messages Memory module problems Beep errorsNetworking problems Ethernet problems Wireless LAN problem Bluetooth problemsSolution Problems with the display and multimedia devices Problems with the keyboard and other pointing devicesTrackPoint pointing device problems Keyboard problems Computer screen problems External monitor problems Double-clickSound, video and game controllers Audio problems Click Hardware and Sound Battery problems Battery and power problemsAn ac power adapter problem Power problems Power button problem Boot problemsSleep and hibernation problems Hard disk drive problems Problems with drives and other storage devices Problems with ports and connectors Software problemSolid-state drive problem USB problem Dock problem Getting help and service Getting supportBefore you contact Lenovo Using diagnostic programs Lenovo Support Web siteCalling Lenovo Telephone numbers Purchasing additional services User Guide Wireless interoperability Wireless related informationAppendix A. Regulatory information 101 Location of the UltraConnect wireless antennas Locating wireless regulatory noticesUsage environment and your health Industry Canada Class B emission compliance statement Export classification notice German Class B compliance statement Appendix A. Regulatory information User Guide Important Weee information Appendix B. Weee and recycling statementsJapan recycling statements 107 Battery recycling information for the European Union Recycling information for BrazilDisposing of Lenovo computer components Appendix B. Weee and recycling statements User Guide European Union RoHS China RoHS Turkish RoHS111 Ukraine RoHS India RoHS Appendix D. Energy Star model information Power plan Energy Saver settings when plugged into ac powerClick Hardware and Sound Device Manager 113 Click OK 115 Appendix E. Notices Trademarks