Dell™ Latitude™ D620 User's Guide
The Dell Technical Update service provides proactive e-mail notification of software and hardware updates for your computer. The service is free and can be customized for content, format, and how frequently you receive notifications.
To enroll for the Dell Technical Update service, go to support.dell.com/technicalupdate.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
If you experience a problem with your computer, perform the checks in Lockups and Software Problems and run the Dell Diagnostics before you contact Dell for technical assistance.
It is recommended that you print these procedures before you begin.
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NOTICE: The Dell Diagnostics works only on Dell™ computers. |
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NOTE: The Drivers and Utilities CD is optional and may not ship with your computer. |
Start the Dell Diagnostics from either your hard drive or from the Drivers and Utilities CD (also known as the ResourceCD).
The Dell Diagnostics is located on a hidden diagnostic utility partition on your hard drive.
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NOTE: If your computer cannot display a screen image, contact Dell (See Contacting Dell). |
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NOTE: If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft® Windows® desktop. Then shut down your computer and try again. |
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NOTE: If you see a message stating that no diagnostics utility partition has been found, run the Dell Diagnostics from the Drivers and Utilities CD. |
The computer runs the Pre-boot System Assessment, a series of initial tests of your system board, keyboard, hard drive, and display.
If the Pre-boot System Assessment completes successfully, you receive the message Booting Dell Diagnostic Utility Partition. Press any key to continue.
When the DELL logo appears, press <F12> immediately.
If you wait too long and the Windows logo appears, continue to wait until you see the Windows desktop. Then shut down your computer and try again.
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NOTE: The next steps change the boot sequence for one time only. On the next start-up, the computer boots according to the devices specified in system setup. |
If you cannot resolve the error condition, contact Dell (see Contacting Dell).
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NOTE: The Service Tag for your computer is located at the top of each test screen. If you contact Dell, technical support will ask for your Service Tag. |
The Dell Support Utility is installed on your computer and available from the Dell Support icon on the taskbar or from the Start button. Use this support utility for self-support information, software updates, and health scans of your computing environment.
Access the Dell Support Utility from the Dell Support icon (
) on the taskbar or from the Start menu.
If the icon does not appear in your taskbar:
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NOTE: If the Dell Support Utility is not available from the Start menu, go to support.dell.com and download the software. |
Click or right-click the 
icon to perform the following tasks:
Double-click the 
icon to manually check your computing environment, view frequently asked questions, access the help file for the Dell Support Utility, and view Dell Support settings.
For more information about the Dell Support Utility, click the question mark (?) at the top of the Dell Support screen.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
Ensure that Microsoft® Windows® recognizes the drive — Click the Start button and click My Computer. If the floppy, CD, or DVD drive, is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from recognizing the drive.
Test the drive —
Clean the drive or disk — See Cleaning Your Computer.
Ensure that the CD is snapped onto the spindle
Check for hardware incompatibilities — See Resolving Software and Hardware Incompatibilities.
Run the Dell Diagnostics — See Dell Diagnostics.
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NOTE: High-speed CD or DVD drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the CD or DVD. |
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NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives. |
Close other programs — The CD/DVD-RW drive must receive a steady stream of data when writing. If the stream is interrupted, an error occurs. Try closing all programs before you write to the CD/DVD-RW.
Turn off Standby mode in Windows before writing to a CD/DVD-RW disc — See Standby Mode or search for the keyword standby in the Windows Help and Support Center for information on power management modes.
Change the write speed to a slower rate — See the help files for your CD or DVD creation software.
Allow the computer to cool before turning it on — A hot hard drive may prevent the operating system from starting. Try allowing the computer to return to room temperature before turning it on.
Run Check Disk —
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
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NOTE: Connect the modem to an analog telephone jack only. The modem does not operate while it is connected to a digital telephone network. |
Check the Microsoft Outlook® Express Security Settings — If you cannot open your e-mail attachments:
Check the telephone line connection
Check the telephone jack
Connect the modem directly to the telephone wall jack
Use a different telephone line —
Run the Modem Helper diagnostics — Click the Start button, point to All Programs and then click Modem Helper. Follow the instructions on the screen to identify and resolve modem problems. (Modem Helper is not available on all computers.)
Verify that the modem is communicating with Windows —
If all commands receive responses, the modem is operating properly.
Ensure that you are connected to the Internet — Ensure that you have subscribed to an Internet provider. With the Outlook Express e-mail program open, click File. If Work Offline has a checkmark next to it, click the checkmark to remove it and connect to the Internet. For help, contact your Internet service provider.
Scan the computer for spyware — If you are experiencing slow computer performance, you frequently receive pop-up advertisements, or you are having problems connecting to the Internet, your computer might be infected with spyware. Use an anti-virus program that includes anti-spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to support.dell.com and search for the keyword spyware.
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
If the message is not listed, see the documentation for the operating system or the program that was running when the message appeared.
Auxiliary device failure — The touch pad, track stick, or external mouse may be faulty. For an external mouse, check the cable connection. Enable the Pointing Device option in the system setup program. If the problem persists, contact Dell (see Contacting Dell).
Bad command or file name — Ensure that you have spelled the command correctly, put spaces in the proper place, and used the correct pathname.
Cache disabled due to failure — The primary cache internal to the microprocessor has failed.Contact Dell (see Contacting Dell).
CD drive controller failure — The CD drive does not respond to commands from the computer (see Dell Support Utility).
Data error — The hard drive cannot read the data (see Dell Support Utility).
Decreasing available memory — One or more memory modules may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them (see Memory).
Disk C: failed initialization — The hard drive failed initialization. Run the hard drive tests in the Dell Diagnostics (see Dell Diagnostics).
Drive not ready — The operation requires a hard drive in the bay before it can continue. Install a hard drive in the hard drive bay (see Hard Drive).
Error reading PCMCIA card — The computer cannot identify the PC Card. Reinsert the card or try another PC Card (see Using Cards).
Extended memory size has changed — The amount of memory recorded in NVRAM does not match the memory installed on your computer. If the error appears again, contact Dell (see Contacting Dell).
The file being copied is too large for the destination drive — The file that you are trying to copy is too large to fit on the disk, or the disk is too full. Try copying the file to a different disk or use a larger capacity disk.
A filename cannot contain any of the following characters: \ / : * ? " < > | — Do not use these characters in filenames.
Gate A20 failure — A memory module may be loose. Reinstall the memory modules and, if necessary, replace them. See Memory.
General failure — The operating system is unable to carry out the command. The message is usually followed by specific information—for example, Printer out of paper. Take the appropriate action.
Hard-disk drive configuration error — The computer cannot identify the drive type. Shut down the computer, remove the hard drive (see Hard Drive), and boot the computer from a CD. Then shut down the computer, reinstall the hard drive, and restart the computer. Run the Hard-Disk Drive tests in the Dell Diagnostics (see Dell Diagnostics).
Hard-disk drive controller failure 0 — The hard drive does not respond to commands from the computer. Shut down the computer, remove the hard drive (see Hard Drive), and boot the computer from a CD. Then shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard-Disk Drive tests in the Dell Diagnostics (see Dell Diagnostics).
Hard-disk drive failure — The hard drive does not respond to commands from the computer. Shut down the computer, remove the hard drive (see Hard Drive), and boot the computer from a CD. Then shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard-Disk Drive tests in the Dell Diagnostics (see Dell Diagnostics).
Hard-disk drive read failure — The hard drive may be defective. Shut down the computer, remove the hard drive (see Hard Drive), and boot the computer from a CD. Then shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard-Disk Drive tests in the Dell Diagnostics (see Dell Diagnostics).
Insert bootable media — The operating system is trying to boot to a nonbootable CD. Insert a bootable CD.
Invalid configuration information-please run System Setup Program — The system configuration information does not match the hardware configuration. The message is most likely to occur after a memory module is installed. Correct the appropriate options in the system setup program (see System Setup Program).
Keyboard clock line failure — For external keyboards, check the cable connection. Run the Keyboard Controller test in the Dell Diagnostics (see Dell Diagnostics).
Keyboard controller failure — For external keyboards, check the cable connection. Restart the computer, and avoid touching the keyboard or the mouse during the boot routine. Run the Keyboard Controller test in the Dell Diagnostics (see Dell Diagnostics).
Keyboard data line failure — For external keyboards, check the cable connection. Run the Keyboard Controller test in the Dell Diagnostics (see Dell Diagnostics).
Keyboard stuck key failure — For external keyboards or keypads, check the cable connection. Restart the computer, and avoid touching the keyboard or keys during the boot routine. Run the Stuck Key test in the Dell Diagnostics (see Dell Diagnostics).
Licensed content is not accessible in MediaDirect — Dell MediaDirect™ cannot verify the Digital Rights Management (DRM) restrictions on the file, so the file cannot be played (see Dell MediaDirect™ problems).
Memory address line failure at address, read value expecting value — A memory module may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them (see Memory).
Memory allocation error — The software you are attempting to run is conflicting with the operating system, another program, or a utility. Shut down the computer, wait 30 seconds, and then restart it. Try to run the program again. If the error message still appears, see the software documentation.
Memory data line failure at address, read value expecting value — A memory module may be faulty or improperly seated. Reinstall the memory modules (see Memory) and, if necessary, replace them.
Memory double word logic failure at address, read value expecting value — A memory module may be faulty or improperly seated. Reinstall the memory modules (see Memory) and, if necessary, replace them.
Memory odd/even logic failure at address, read value expecting value — A memory module may be faulty or improperly seated. Reinstall the memory modules (see Memory) and, if necessary, replace them.
Memory write/read failure at address, read value expecting value — A memory module may be faulty or improperly seated. Reinstall the memory modules (see Memory) and, if necessary, replace them.
No boot device available — The computer cannot find the hard drive. If the hard drive is your boot device, ensure that the drive is installed, properly seated, and partitioned as a boot device.
No boot sector on hard drive — The operating system may be corrupted. Contact Dell (see Contacting Dell).
No timer tick interrupt — A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see Dell Diagnostics).
Not enough memory or resources. Exit some programs and try again — You have too many programs open. Close all windows and open the program that you want to use.
Operating system not found — Reinstall the hard drive (see Hard Drive). If the problem persists, contact Dell (see Contacting Dell).
Optional ROM bad checksum — The optional ROM apparently failed. Contact Dell (see Contacting Dell).
A required .DLL file was not found — The program that you are trying to open is missing an essential file. Remove and then reinstall the program.
Sector not found — The operating system cannot locate a sector on the hard drive. You may have a defective sector or corrupted FAT on the hard drive. Run the Windows error-checking utility to check the file structure on the hard drive. See the Help and Support Center (see Windows Help and Support Center) for instructions. If a large number of sectors are defective, back up the data (if possible), and then reformat the hard drive.
Seek error — The operating system cannot find a specific track on the hard drive.
Shutdown failure — A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see Dell Diagnostics).
Time-of-day clock lost power — System configuration settings are corrupted. Connect your computer to an electrical outlet to charge the battery. If the problem persists, try to restore the data by entering the system setup program. Then immediately exit the program. If the message reappears, contact Dell (see Contacting Dell).
Time-of-day clock stopped — The reserve battery that supports the system configuration settings may require recharging. Connect your computer to an electrical outlet to charge the battery. If the problem persists, contact Dell (see Contacting Dell).
Time-of-day not set-please run the System Setup program — The time or date stored in the system setup program does not match the system clock. Correct the settings for the Date and Time options (see System Setup Program).
Timer chip counter 2 failed — A chip on the system board may be malfunctioning. Run the System Set tests in the Dell Diagnostics (see Dell Diagnostics).
Unexpected interrupt in protected mode — The keyboard controller may be malfunctioning, or a memory module may be loose. Run the System Memory tests and the Keyboard Controller test in the Dell Diagnostics (see Dell Diagnostics).
x:\ is not accessible. The device is not ready — Insert a disk into the drive and try again.
Warning: Battery is critically low — The battery is running out of charge. Replace the battery, or connect the computer to an electrical outlet. Otherwise, activate hibernate mode or shut down the computer.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you perform the various checks.
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NOTE: Use the integrated keyboard when running Dell Diagnostics or the System Setup program. |
Check the keyboard cable — Shut down the computer. Disconnect the keyboard cable and check it for damage, and firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the keyboard directly to the computer.
Check the external keyboard —
If you cannot verify these steps, you may have a defective external keyboard.
To verify that the problem is with the external keyboard, check the integrated keyboard —
If the characters appear now but did not with the external keyboard, you may have a defective external keyboard. Contact Dell (see Contacting Dell).
Run the keyboard diagnostics tests — Run the PC-AT Compatible Keyboards tests in the Dell Diagnostics (see Dell Diagnostics). If the tests indicate a defective external keyboard, contact Dell (see Contacting Dell).
Disable the numeric keypad — Press <Num Lk> to disable the numeric keypad if numbers are displayed instead of letters. Verify that the numbers lock light is not lit.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Ensure that the AC adapter is firmly connected to the computer and to the electrical outlet.
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NOTICE: You might lose data if you are unable to perform an operating system shutdown. |
Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer.
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NOTE: Software usually includes installation instructions in its documentation or on a floppy disk or CD. |
End the program —
Check the software documentation —
If necessary, uninstall and then reinstall the program.
Run the Program Compatibility Wizard — The Program Compatibility Wizard configures a program so it runs in an environment similar to non-Windows XP operating system environments.
Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer.
Check the Dell MediaDirect help file for information — Click the ? icon at the bottom of the Dell MediaDirect screen to access Help.
To play movies with Dell MediaDirect, you must have a DVD drive and the Dell DVD Player — If you purchased a DVD drive with your computer, this software should already be installed.
Video Quality problems — Turn off the Use Hardware Acceleration option. This feature takes advantage of the special processing in some graphics cards to reduce processor requirements when playing DVDs and certain types of video files.
Cannot play some media files — Because Dell MediaDirect provides access to media files outside the Windows XP operating system environment, access to licensed content is restricted. Licensed content is digital content that has Digital Rights Management (DRM) applied to it. The Dell MediaDirect environment cannot verify the DRM restrictions, so the licensed files cannot be played. Licensed music and video files have a lock icon next to them. You can access licensed files in the Windows XP operating system environment.
Adjusting the color settings for movies that contain scenes that are too dark or too bright — Click EagleVision to use a video enhancement technology that detects video content and dynamically adjusts the brightness/contrast/saturation ratios.
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NOTICE: You cannot reinstall the Dell MediaDirect feature if you reformat the hard drive. Contact Dell for assistance (see Contacting Dell). |
Check the software documentation or contact the software manufacturer for troubleshooting information —
Back up your files immediately.
Use a virus-scanning program to check the hard drive, floppy disks, or CDs.
Save and close any open files or programs and shut down your computer through the Start menu.
Scan the computer for spyware — If you are experiencing slow computer performance, you frequently receive pop-up advertisements, or you are having problems connecting to the Internet, your computer might be infected with spyware. Use an anti-virus program that includes anti-spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to support.dell.com and search for the keyword spyware.
Run the Dell Diagnostics — See Dell Diagnostics. If all tests run successfully, the error condition is related to a software problem.
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
If you receive an insufficient memory message —
If you experience other memory problems —
Fill out the Diagnostics Checklist as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Check the network cable connector — Ensure that the network cable is firmly inserted into both the network connector on the back of the computer and the network connector.
Check the network lights on the network connector — No light indicates that no network communication exists. Replace the network cable.
Restart the computer and log on to the network again.
Check your network settings — Contact your network administrator or the person who set up your network to verify that your network settings are correct and that the network is functioning.
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NOTE: The Dell Mobile Broadband Card Utility user's guide is located under Help and Support. You can also download the user's guide from support.dell.com. |
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NOTE: The 
icon appears in the notification area if the computer has a Dell Mobile Broadband card installed. Double-click the icon to launch the utility. |
Cannot connect —
The Dell Mobile Broadband Card must be activated on the network in order to connect. Position the mouse over the 
icon in the notification area to read the status of the connection. If the status indicates the mobile broadband card is not activated, see Activate your Mobile Broadband card for more information. If problems persist, contact your Mobile Broadband service carrier for details on your plan.
Check your Mobile Broadband network service — Contact your Mobile Broadband service carrier to verify coverage plan and supported services.
Check the status in the Dell Mobile Broadband Card Utility —
Click the 
icon in the taskbar to launch the utility. Check the status in the main window:
icon and ensure that the switch is enabled.Activate your Mobile Broadband card — Before you connect to the Internet, you must activate the Mobile Broadband service through your cellular service provider. For instructions and for additional information about using the Dell Mobile Broadband Card Utility, see the user's guide available through the Windows Help and Support Center. To access the Help and Support Center, see Windows Help and Support Center. The user's guide is also available on the Dell Support website at support.dell.com and on the CD included with your Mobile Broadband card if you purchased the card separately from your computer.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Check the Card — Ensure that the card is properly inserted into the connector.
Ensure that the card is recognized by Windows — Double-click the Safely Remove Hardware icon in the Windows taskbar. Ensure that the card is listed.
If you have problems with a Dell-provided Card — Contact Dell (see Contacting Dell).
If you have problems with a Card not provided by Dell — Contact the PC Card manufacturer.
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Check the power light — When the power light is lit or blinking, the computer has power. If the power light is blinking, the computer is in standby mode—press the power button to exit standby mode. If the light is off, press the power button to turn on the computer.
Charge the battery — The battery charge may be depleted.
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NOTE: Battery operating time (the time the battery can hold a charge) decreases over time. Depending on how often the battery is used and the conditions under which it is used, you may need to purchase a new battery during the life of your computer. |
Check the battery status light — If the battery status light flashes orange or is a steady orange the battery charge is low or depleted. Connect the computer to an electrical outlet.
If the battery status light flashes green and orange, the battery is too hot to charge. Shut down the computer, disconnect the computer from the electrical outlet, and then let the battery and computer cool to room temperature.
If the battery status light rapidly flashes orange, the battery may be defective. Contact Dell (see Contacting Dell).
Check the battery temperature — If the battery temperature is below 0° C (32° F), the computer will not start up.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Check the AC adapter — Check the AC adapter cable connections. If the AC adapter has a light, ensure that the light is on.
Connect the computer directly to an electrical outlet — Bypass power protection devices, power strips, and the extension cable to verify that the computer turns on.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, halogen lamps, or other appliances.
Adjust the power properties — See Configuring Power Management Settings.
Reseat the memory modules — If the computer power light turns on but the display remains blank, reinstall the memory modules (see Memory).
Your computer is designed to use a 65-W or 90-W AC adapter. However, for optimum system performance, you should always use a 90-W adapter.
Using less-powerful AC adapters, including the 65-W AC adapter, will cause you to receive a WARNING message.
Due to the extra power consumption when a computer is docked to the Dell D/Dock, normal computer operation is not possible on battery power alone. Ensure that the AC adapter is connected to your computer when the computer is docked to the Dell D/Dock.
If a computer is connected to the Dell D/Dock or Dell D/Port while the computer is running, presence of the docking device is ignored until the AC adapter is connected to the computer.
If a computer loses AC power while docked to the Dell D/Dock or Dell D/Port, the computer immediately goes into low-performance mode.
Fill out the Diagnostics Checklist (see Diagnostics Checklist)as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
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NOTE: If you need technical assistance for your printer, contact the printer's manufacturer. |
Ensure that the printer is turned on.
Check the printer cable connections —
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Verify that the printer is recognized by Windows —
If the printer is listed, right-click the printer icon.
Reinstall the printer driver — See the printer documentation for instructions
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
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NOTE: If you need technical assistance for your scanner, contact the scanner's manufacturer. |
Check the scanner documentation — See the scanner documentation for setup and troubleshooting information.
Unlock the scanner — Ensure that your scanner is unlocked if it has a locking tab or button.
Restart the computer and try the scanner again.
Check the cable connections —
Verify that the scanner is recognized by Microsoft Windows —
If your scanner is listed, Windows recognizes the scanner.
Reinstall the scanner driver — See the scanner documentation for instructions.
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
Adjust the Windows volume control — Double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted. Adjust the volume, bass, or treble controls to eliminate distortion.
Adjust the volume using keyboard shortcuts — Press <Fn><End> to disable (mute) or reenable the integrated speakers.
Reinstall the sound (audio) driver — See Reinstalling Drivers and Utilities.
Ensure that the subwoofer and the speakers are turned on — See the setup diagram supplied with the speakers. If your speakers have volume controls, adjust the volume, bass, or treble to eliminate distortion.
Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.
Disconnect headphones from the headphone connector — Sound from the speakers is automatically disabled when headphones are connected to the computer's front-panel headphone connector.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.
Reinstall the audio driver — See Reinstalling Drivers and Utilities.
Run the Dell Diagnostics — See Dell Diagnostics.
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NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to MP3 songs, ensure that you did not turn the player volume down or off. |
Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector.
Adjust the Windows volume control — Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.
Check the touch pad settings —
Check the mouse cable — Shut down the computer. Disconnect the mouse cable, check it for damage, and firmly reconnect the cable.
If you are using a mouse extension cable, disconnect it and connect the mouse directly to the computer.
To verify that the problem is with the mouse, check the touch pad —
If the touch pad operates correctly, the mouse may be defective.
Check the system setup program settings — Verify that the system setup program (see System Setup Program) lists the correct device for the pointing device option. (The computer automatically recognizes a USB mouse without making any setting adjustments.)
Test the mouse controller — To test the mouse controller (which affects pointer movement) and the operation of the touch pad or mouse buttons, run the Mouse test in the Pointing Devices test group in the Dell Diagnostics (see Dell Diagnostics).
Reinstall the touch pad driver — See Reinstalling Drivers and Utilities.
Fill out the Diagnostics Checklist (see Dell Diagnostics) as you complete these checks.
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CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. |
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NOTE: If you are using a program that requires a higher resolution than your computer supports, it is recommended that you attach an external monitor to your computer. |
Check the battery — If you are using a battery to power your computer, the battery charge may be depleted. Connect the computer to an electrical outlet using the AC adapter, and turn on the computer.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Check the AC adapter — Check the AC adapter cable connections. If the AC adapter has a light, ensure that the light is on.
Connect the computer directly to an electrical outlet — Bypass power protection devices, power strips, and the extension cable to verify that the computer turns on.
Adjust the power properties — Search for the keyword standby in the Windows Help and Support Center (see Windows Help and Support Center).
Switch the video image — If your computer is attached to an external monitor, press <Fn><F8> to switch the video image to the display.
Adjust the brightness — Press <Fn> and the up- or down-arrow key
Move the external subwoofer away from the computer or monitor — 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.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, halogen lamps, or other appliances.
Rotate the computer to face a different direction — Eliminate sunlight glare, which can cause poor picture quality.
Adjust the Windows display settings —
Run the Video diagnostics tests — 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. Then contact Dell (see Contacting Dell).
See "Error Messages" — If an error message appears, see Error Messages.
Connect an external monitor —
If the external monitor works, the computer display or video controller may be defective. Contact Dell (see Contacting Dell).
