If the display is difficult to read | Dell UY691 specification

If the display is difficult to read

A D J U S T T H E B R I G H T N E S S — Press <Fn> and the up- or down-arrow key.

M O V E T H E E X T E R N A L S U B W O O F E R A W A Y F R O M T H E C O M P U T E R O R M O N I T O R — If your external speaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the computer or external monitor.

E L I M I N A T E P O S S I B L E I N T E R F E R E N C E — Turn off nearby fans, fluorescent lights, halogen lamps, or other appliances.

R O T A T E T H E C O M P U T E R T O F A C E A D I F F E R E N T D I R E C T I O N — Eliminate sunlight glare, which can cause poor picture quality.

A D J U S T T H E W I N D O W S D I S P L A Y S E T T I N G S —

1Click Start→Control Panel→Appearance and Themes.

2Click the area you want to change or click the Display icon.

3Try different settings for Color quality and Screen resolution.

R U N T H E VI D E O D I A G N O S T I C S T E S T S — If no error message appears and you still have a display problem, but the display is not completely blank, run the Video device group in the Dell Diagnostics (see "Dell Diagnostics" on page 73). Then contact Dell (see "Contacting Dell" on page 143).

S E E "E R R O R M E S S A G E S " — If an error message appears, see "Error Messages" on page 80.

If only part of the display is readable

C O N N E C T A N E X T E R N A L M O N I T O R —

1Shut down your computer and connect an external monitor to the computer.

2Turn on the computer and the monitor and adjust the monitor brightness and contrast controls.

If the external monitor works, the computer display or video controller may be defective. Contact Dell (see "Contacting Dell" on page 143).

92

Troubleshooting

Image 92

Dell UY691 manual If the display is difficult to read, If only part of the display is readable

Contents

User’s Guide Abbreviations and Acronyms Contents Using the Keyboard Setting Up and Using Networks Securing Your Computer Double-Clicking the Dell Support Icon Traveling With Your Computer Adding and Replacing Parts 149 Finding Information Drivers and Utilities CD Quick Reference Guide Dell Support Website support.dell.com To view Dell QuickSet Help, right-click the Quickset Icon in the Microsoft Windows taskbarFor more information on Dell QuickSet, see Dell QuickSet on About Your Computer Front View Track stick Light is flashing Y B O a R D S T a T U S L I G H T S Left Side View D I O C O N N E C T O R S Right Side View Back View Connects serial devices, such as a mouse or handheld device About Your Computer Bottom View Transferring Information to a New Computer To prepare the new computer for the file transfer Click Finished and restart the new computer Windows Vista Using a Battery Battery Performance Checking the Battery Charge Dell QuickSet Battery MeterMicrosoft Windows Power Meter Charge Gauge Conserving Battery Power Power Management ModesLow-Battery Warning Standby Mode Hibernate Mode Replacing the Battery Configuring Power Management SettingsCharging the Battery Storing a Battery Using the Keyboard Numeric KeypadKey Combinations System Functions Battery Power ManagementDisplay Functions Microsoft Windows Logo Key Functions Touch Pad Pull the cap off the track stick Changing the Track Stick CapCustomizing the Touch Pad and Track Stick Using the Keyboard Using the Keyboard Using Multimedia Playing CDs or DVDs Adjusting the Volume Adjusting the PictureVolume Control Window Volume Control Buttons Using the Display Adjusting Brightness Microsoft Windows XP Click the Windows Vista Start button →Control Panel Microsoft Windows XP Using the Ambient Light Sensor Click the Start button and click Control Panel Ambient light sensor Using the Display Setting Up a Network in Microsoft Windows XP Setting Up and Using NetworksConnecting a Network or Broadband Modem Cable Setting Up a Network in Microsoft Windows Vista Wireless Local Area Network WlanChecking Your Wireless Network Card What You Need to Establish a Wlan Connection Setting Up and Using Networks Connecting to a Wlan Setting Up and Using Networks Mobile Broadband or Wireless Wide Area Network Wwan Checking Your Mobile Broadband Card Connecting to a Mobile Broadband Network Enabling/Disabling the Dell Mobile Broadband Network Card For information about Dell QuickSet, see Dell QuickSet on Dell Wi-Fi Catcher Network LocatorInternet Connection Firewall Button →Help and Support Setting Up and Using Networks Using Cards Installing a PC Card or ExpressCardCard Types Card Blanks PC Card ExpressCard Removing a Card or Blank Using Cards Securing Your Computer Security Cable LockSmart Cards About Smart Cards Passwords Installing a Smart Card Using a Primary/System Password Using an Administrator Password Using a Hard Drive Password Enabling the TPM Feature Trusted Platform Module TPM If Your Computer Is Lost or Stolen Security Management SoftwareComputer Tracking Software Securing Your Computer Securing Your Computer Diagnostic Light Codes During Post TroubleshootingDiagnostic Lights Computer. If the computer starts Dell Technical Update Service Dell DiagnosticsWhen to Use the Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive Dell Diagnostics Main Menu Troubleshooting Clicking the Dell Support Icon Accessing the Dell Support UtilityDell Support Utility Drive Problems Double-Clicking the Dell Support Icon CD and DVD drive problems Hard drive problemsProblems writing to a CD/DVD-RW drive Right-click Local Disk C Mail, Modem, and Internet Problems Error Messages Troubleshooting Click Start→Control Panel→Add or Remove Programs Ieee 1394 Device Problems Keyboard ProblemsFor Windows XP For Windows Vista Unexpected characters Lockups and Software ProblemsExternal keyboard problems Other software problems Computer does not start upComputer stops responding Program stops responding or crashes repeatedly Memory Problems Network ProblemsIf necessary, uninstall and then reinstall the program General PC Card or ExpressCard Problems Power Problems Memory modules see Memory on Ensuring Sufficient Power for Your ComputerDocking Power Considerations Printer Problems Scanner Problems Sound and Speaker Problems Touch Pad or Mouse ProblemsNo sound from headphones No sound from integrated speakers Video and Display Problems If the display is blank If the display is difficult to read If only part of the display is readable Overview System Setup ProgramViewing the System Setup Screens Changing the Boot Sequence System Setup ScreensCommonly Used Settings Performing a One-Time Boot Changing COM Ports System Setup Program Traveling With Your Computer Identifying Your ComputerPacking the Computer Attach a name tag or business card to the computer Travel Tips Traveling by Air Reinstalling Software What Is a Driver?Drivers Identifying Drivers Reinstalling Drivers and Utilities 101 Restoring Your Operating System Using Microsoft Windows System Restore 103 Using the Operating System CD Ensure that Turn off System Restore is unchecked 105 106 Adding and Replacing Parts Before You BeginRecommended Tools Turning Off Your Computer Follow the procedures in Before You Begin on 108 Hard Drive 109 Removing the Device Security Screw Media BayReturning a Hard Drive to Dell Removing and Installing Media Bay Devices 111 Hinge Cover Keyboard 113 Keyboard Keyboard screws Memory 115 Memory module 117 Memory module 119 Wireless CardsSubscriber Identity Module SIM Card Wireless Local Area Network Wlan Cards 121 Mobile Broadband or Wireless Wide Area Network Wwan Cards FCM Flash Cache Module 123 FCM card Internal Card With Bluetooth Wireless Technology 125 Coin-Cell Battery 127 128 Dell QuickSet 129 130 Specifications 131 132 PC/SC 133 Lvds 134 135 136 137 138 Technical Support and Customer Service Getting HelpObtaining Assistance 139 DellConnect Online Services Problems With Your Order AutoTech ServiceAutomated Order-Status Service 141 Before You Call 142 143 Contacting DellFor customers in the United States, call 800-WWW-DELL Visit support.dell.com Cleaning Your Computer AppendixComputer, Keyboard, and Display Touch Pad CDs and DVDs MouseFloppy Drive Macrovision Product Notice FCC Notice U.S. OnlyFCC Class B 147 148 Glossary 149 150 151 152 153 154 155 156 157 Video resolution See resolution 158