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Lenovo G530 manual Troubleshooting Incorrect characters appear on the screen

Models: G530

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Chapter 4. Troubleshooting

Incorrect characters appear on the screen.

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

Missing, discolored, or bright dots appear on the screen every time you turn on your computer.

This is an intrinsic characteristic of the TFT technology. Your computer’s display contains multiple thin-film transistors (TFTs). A small number of missing, discolored, or bright dots on the screen might exist all the time.

A message, “Unable to create overlay window,” appears when you try to start DVD playback.

-or-

You get poor or no playback while running video playback, DVD playback, or game applications.

Do either of the following:

If you are using 32-bit color mode, change the color depth to 16-bit mode.

If you are using a desktop size of 1920×1200 or larger, reduce the desktop size and the color depth.

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Lenovo G530 manual Troubleshooting Incorrect characters appear on the screen

Contents

Lenovo G530 Page Energy Star model information Page Explanation of hard disk capacity Page Contents Safety, use, and care Contents Getting helpAppendix A. Lenovo Limited 113Getting to know your computer System status indicators Power buttonGetting to know your computer Computer displayLeft-side view Security keyhole Getting to know your computer Fan louversHdmi port specific models only Right-side view AC power adapter jackSpeakers Wireless device switch specific models onlyBottom view Battery latch spring loaded Getting to know your computer Battery latch manualWlan card compartment Central processing unit CPU/ Memory RAM compartmentHard disk drive compartment ƒ Memory RAM compartment„ Putting your computer to sleep Using your computer„ Shutting down your computer Using your computer Using the touch pad„ Numeric keypad Using the keyboard„ Function key combinations Fn + PrtSc/SysRq System request Special keys and buttons „ Touch sensor and volume buttons„ Lenovo CareSM button „ Playing CDs/DVDs disc media Using the optical driveUsing memory cards specific models only „ Removing a memory card „ Inserting a memory cardUsing the integrated camera specific models only „ Using LAN port Using the Internet„ Using wireless LAN specific models only „ Using modem port specific models only „ Attaching a mechanical lock optional Securing your computer„ Using passwords To set a supervisor password Select Set Supervisor Password, and press the Enter key Using your computer To set a user password Using your computer Changing or removing the user password To set a HDD password Using your computer HDD passwordsChanging or removing the HDD passwords Installing device drivers „ Checking battery status Using the battery and AC adapter„ Your computer batteries „ Using the AC adapter „ Charging the battery „ Handling the battery Using your computer Connecting a universal serial bus USB device Using external devicesUsing external devices Connecting an ExpressCard device„ Removing an ExpressCard „ Inserting an ExpressCard„ Connecting a VGA monitor Connecting an external displayConnecting a headphone and audio device Connecting an external microphone „ Enabling Bluetooth communications Connecting a Bluetooth enabled device specific models onlyFrequently asked questions TroubleshootingHow can I contact the Customer Support Center? TroubleshootingWhen I turn on the computer, nothing appears on the screen „ Display problemsMy screen goes blank while the computer is on „ Keyboard problems „ a password problemForgot my password Number appears when you enter a letterComputer enters sleep mode unexpectedly „ Sleep or hibernation problemsScreen is blank „ Computer screen problemsClick the Advanced Settings button Troubleshooting Screen is unreadable or distortedTroubleshooting Incorrect characters appear on the screen „ Battery problems „ Sound problemsOperating time for a fully charged battery is short „ a startup problem „ a hard disk drive problem„ Other problems Computer does not start from a device you want „ Diagnosing problems Troubleshooting „ Introducing Rescue and Recovery Using Rescue and Recovery„ Restoring the factory contents Troubleshooting Restoring the factory contents using the recovery discs Restoring the factory contents from the service partition„ Recovering data Troubleshooting Upgrading and replacing devices „ Replacing the batteryUpgrading and replacing devices Upgrading and replacing devices „ Upgrading the hard disk drive Upgrading and replacing devices Handling a hard disk drive Remove the cover Upgrading and replacing devices „ Removing the optical drive „ Replacing memory Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Setup Poster User Online Online Video Guide Getting help and service Getting help and serviceCalling the customer support center Getting help and serviceGetting help and service Getting help and service Getting help around the world Important safety information Safety, use, and care information„ Conditions that require immediate action Safety, use, and care informationSafety, use, and care information „ Service and upgrades „ Power cords and power adapters Safety, use, and care information „ Plugs and outlets „ Extension cords and related devices„ Power supply statement „ Lithium coin cell battery notice „ Heat and product ventilation Safety, use, and care information „ CD and DVD drive safety „ Electrical current safety information Safety, use, and care information „ Laser compliance statement Safety, use, and care information „ Liquid crystal display LCD notice Caring your computer „ Be careful about where and how you workSafety, use, and care information 100 „ Carry your computer properly „ Be gentle with your computer„ For outdoor use 101„ Handle storage media and drives properly „ Data safety102 „ Other important tips „ Take care in setting passwords103 104 „ Cleaning the cover of your computer105 „ Cleaning your computer keyboard„ Cleaning your computer display Accessibility and comfort106 107 „ Ergonomic information108 „ Questions about vision? „ What if you are traveling?109 110 „ General tips for maintenance111 112 „ What this warranty covers Appendix A. Lenovo Limited Warranty113 „ What your service provider will do to correct problems „ How to obtain warranty serviceAppendix A. Lenovo Limited Warranty 114115 „ Replacement of a product or part„ Use of personal information „ Your additional responsibilities116 „ Limitation of liability „ What this warranty does not cover117 118 „ Other rights „ Dispute resolution119 „ Suplemento de Garantía para México „ European Economic Area EEA120 121 122 Warranty InformationCustomer Replaceable Unit CRU Service On-site Service „ Types of warranty service123 124 Customer Carry-In or Mail-In Service125 Warranty service telephone numbers126 Appendix B. Customer Replaceable Units CRUsAppendix B. Customer Replaceable Units CRUs 127128 129 Appendix C. SpecificationsSize Environment 130 Appendix C. Specifications131 Appendix D. NoticesAppendix D. Notices 132„ Television output notice „ Export classification notice133 „ Wireless Interoperability Wireless related information134 135 „ Usage environment and your health136 „ Federal Communications Commission FCC Statement Electronic emissions notices137 „ Avis de conformité à la réglementation d’Industrie Canada „ Industry Canada Class B Emission Compliance Statement138 139 „ German Class B Compliance Statement140 „ European Union Compliance Statement Class B Compliance141 „ Japanese Vcci Class B Statement„ Korea Class B „ Japan Compliance Statement for Power line Harmonics142 „ General recycling statement Weee and recycling statements143 144 EU Weee Statements145 Japan Recycling Statements146 „ Disposing of a Lenovo Computer Components147 148 149 150 Index151 Index 152Page New World. New Thinking.TM