Using the Ambient Light Sensor | Dell TX453 manual

3In the Display Settings window, click the monitor 2 icon, click the Extend the desktop onto this monitor check box, and then click Apply.

4Click OK to close the Display Settings window.

To disable extended desktop mode:

1In the Display Settings window, click the Settings tab.

2Click the monitor 2 icon, uncheck the Extend the desktop onto this monitor option, and then click

Apply.

Using an External Monitor as Your Primary Display: Swapping Primary and Secondary Displays

To swap your primary and secondary display designations (for example, to use your external monitor as your primary display after docking), perform the steps in the following section that corresponds to the operating system your computer is using.

Microsoft® Windows® XP

1Click the Start button and click Control Panel.

2Under Pick a category, click Appearance and Themes.

3Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, click

Display.

4Click the Settings tab and select the monitor 1 or monitor 2 icon, and click Apply.

Windows Vista®

1Click the Windows Vista Start button, , and click Control Panel.

2Under Appearance and Personalization, click Adjust screen resolution.

3In the Display Settings window, click the monitor 2 icon, click the This is my main monitor check box, and then click Apply.

4Click OK to close the Display Settings window.

Using the Ambient Light Sensor

The ambient light sensor is located on the front of the computer display. The sensor detects available environmental light and automatically increases or decreases the display backlighting to compensate for low-light and high-light environments.

You can enable or disable the ambient light sensor feature by pressing the <Fn> and left-arrow key combination.

NOTE: Do not cover the ambient light sensor with any adhesive labels. If covered up, the sensor—when enabled—automatically sets the display brightness to the minimum level.

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Using the Display

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Dell TX453 manual Using the Ambient Light Sensor, Click the Start button and click Control Panel

Contents

User’s Guide W . d e l l . c o m s u p p o r t . d e l l . c o m Abbreviations and Acronyms Contents Customizing the Touch Pad and Track Stick Enabling the Display Settings for a TVMicrosoft Windows Logo Key Functions Setting Up and Using Networks What You Need to Establish a Wlan Connection Starting the Dell Diagnostics From Your Hard Drive Double-Clicking the Dell Support Icon Contents Ensuring Sufficient Power for Your Computer Program stops responding or crashes repeatedly 100 Using Microsoft Windows System Restore 103If only part of the display is readable 102 Internal Card With Bluetooth Wireless Technology 125 Removing and Installing Media Bay Devices 111Wireless Local Area Network Wlan Cards 120 Technical Support and Customer Service 139 145 Returning Items for Warranty Repair or Credit 141142 146 Can be found at support.dell.com Documentation updatesFinding Information Finding Information Quick Reference Guide Dell Support Website support.dell.com For more information on Dell QuickSet, see Dell To view Dell QuickSet Help, right-click the QuicksetIcon in the Microsoft Windows taskbar QuickSet on About Your Computer About Your Computer Volume control buttons Mute button Ambient light sensor Touch pad Solid orange The battery charge is critically low 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 Flashing yellow Error Right Side View Video TV-out connector Back View Connects serial devices, such as a mouse or handheld device About Your Computer Docking-device connector Bottom View About Your Computer Transferring Information to a New Computer To prepare the new computer for the file transfer Click Finished and restart the new computer Windows Vista Page Using a Battery Battery Performance Microsoft Windows Power Meter Checking the Battery ChargeDell QuickSet Battery Meter Charge Gauge Low-Battery Warning Conserving Battery PowerPower Management Modes Standby Mode Hibernate Mode Replacing the Battery Configuring Power Management SettingsCharging the Battery Storing a Battery Numeric Keypad Using the Keyboard and Touch PadUsing the Keyboard and Touch Pad Key Combinations Power Options Properties window see Configuring BatteryPower Management Display Functions Touch Pad Changing the Track Stick Cap Customizing the Touch Pad and Track Stick Using the Keyboard and Touch Pad Using the Keyboard and Touch Pad Playing CDs or DVDs Using MultimediaUsing Multimedia Adjusting the Volume Adjusting the Picture Connecting Your Computer to a TV Enabling the Display Settings for a TV Click the tab for your video card Using the Display Using the DisplayAdjusting 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 and Using Networks Checking Your Wireless Network Card Setting Up a Network in Microsoft Windows VistaWireless Local Area Network Wlan 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 Setting Up and Using Networks Setting Up and Using Networks Card Types Using CardsInstalling a PC Card or ExpressCard Card Blanks PC Card ExpressCard Removing a Card or Blank Using Cards Smart Cards Securing Your ComputerSecurity Cable Lock 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 Dell Diagnostics TroubleshootingDell Technical Update Service When to Use the Dell Diagnostics Dell Diagnostics Main Menu Troubleshooting Clicking the Dell Support Icon Accessing the Dell Support UtilityDell Support Utility Click the Windows Vista Start button →Computer Drive ProblemsDouble-Clicking the Dell Support Icon Problems writing to a CD/DVD-RW drive CD and DVD drive problemsHard drive problems Right-click Local Disk C Mail, Modem, and Internet Problems Error Messages Keyword spyware Troubleshooting Click Start→Control Panel→Add or Remove Programs Ieee 1394 Device Problems Keyboard Problems Unexpected characters Lockups and Software ProblemsExternal keyboard problems Computer stops responding Other software problemsComputer does not start up Program stops responding or crashes repeatedly If necessary, uninstall and then reinstall the program Memory ProblemsNetwork Problems Run the Dell Diagnostics see Dell Diagnostics on PC Card or ExpressCard Problems Power Problems Extension cable to verify that the computer turns on Ensuring Sufficient Power for Your ComputerDocking Power Considerations Printer Problems Scanner Problems No sound from headphones Sound and Speaker ProblemsTouch Pad or Mouse Problems 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 System Setup Program System Setup ProgramViewing the System Setup Screens Overview Changing the Boot Sequence System Setup ScreensCommonly Used Settings Performing a One-Time Boot Changing COM Ports System Setup Program Packing the Computer Traveling With Your ComputerIdentifying Your Computer Attach a name tag or business card to the computer Travel Tips Traveling by Air Reinstalling Software Reinstalling SoftwareWhat Is a Driver? Drivers Reinstalling Drivers and Utilities 101 Restoring Your Operating System 102 Using Microsoft Windows System Restore 103 Using the Operating System Media Ensure that Turn off System Restore is unchecked Chipset Touch Pad Enhances the pointing device features Other105 Components and controllers 106 Recommended Tools Adding and Replacing PartsBefore You Begin Turning Off Your Computer Follow the procedures in Before You Begin on 108 Hard Drive 109 Screws Removing the Device Security Screw Media BayReturning a Hard Drive to Dell Foam packaging Device security screw Device latch release Removing and Installing Media Bay Devices111 Hinge Cover Push the new device into the bay until it clicks Hinge cover Keyboard113 Keyboard connector Keyboard Keyboard screws Memory 115 Memory module 117 Captive screw Memory module 119 Wireless CardsSubscriber Identity Module SIM Card SIM card Wireless Local Area Network Wlan Cards Antenna cables 121 Wlan card Metal securing bracket Mobile Broadband or Wireless Wide Area Network Wwan Cards Wwan card Metal securing bracket FCM Flash Cache Module123 Lift the card out of its connector 124 FCM card Antennae cables FCM card Internal Card With Bluetooth Wireless Technology125 Metal tab Card Cable connector Mylar Coin-cell battery Coin-Cell BatteryCard Card connector Cable connector 127 128 Dell QuickSet Dell QuickSet129 130 Specifications 131 To composite video adapter cable Ieee Pin serial connector Video TV-out132 Modem RJ-11 support Network adapter RJ-45 port Dock 133 LCD interface 134 Keycaps Certain power-intensive conditions see135 Can be significantly reduced under 136 137 138 Obtaining Assistance Technical Support and Customer ServiceGetting Help 139 DellConnect Online Services Automated Order-Status Service Problems With Your OrderAutoTech Service 141 Before You Call Contacting Dell 143 144 Computer, Keyboard, and Display Cleaning Your ComputerAppendix Touch Pad 146 MouseCDs and DVDs FCC Class B Macrovision Product NoticeFCC Notice U.S. Only 147 148 Glossary 149 150 Extended display mode a display setting that allows Glossary 151 152 153 Memory a temporary data storage area inside your Glossary 154 155 156 157 Video resolution See resolution 158