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Solving Problems

Dell™ OptiPlex™ GX280 Systems User's Guide

Battery Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

Replace the battery  —  If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time or date displays during start-up, replace the battery. If the battery still does not work properly, contact Dell.

Drive Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

Fill out the Diagnostics Checklist as you complete these checks.

Test the drive  —   Insert another floppy disk, CD, or DVD to eliminate the possibility that the original one is defective. Insert a bootable floppy disk and restart the computer.

Clean the drive or disk  —  See "Cleaning Your Computer."

Check the cable connections

Check for software and hardware conflicts

Run the Dell Diagnostics

CD and DVD drive problems

NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives.

Adjust the Windows volume control  —   Click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up by clicking the slidebar and dragging it up. Ensure that the sound is not muted by clicking any boxes that are checked.

Check the speakers and subwoofer  —  See "Sound and Speaker Problems."

Problems writing to a CD/DVD-RW drive

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 "Power Management."

Hard drive problems

Running the Dell IDE Hard Drive Diagnostics  —  The Dell IDE Hard Drive Diagnostics is a utility that tests the hard drive to troubleshoot or confirm a hard drive failure. Turn on your computer (if your computer is already on, restart it). When F2 = Setup appears in the upper-right corner of the screen, press <Ctrl><Alt><d>. Follow the instructions on the screen.

Run Check Disk  —   Windows XP Click the Start button and click My Computer. Right-click Local Disk C:. Click Properties. Click the Tools tab. Under Error-checking, click Check Now. Click Scan for and attempt recovery of bad sectors. Click Start. Windows 2000 Double-click My Computer on the Windows desktop. Click the Tools tab. Under Error-checking, click Check Now. Click Start. MS-DOS® Type scandisk x: at an MS-DOS prompt, where x is the hard drive letter, and then press <Enter>. Click the Start button and click My Computer.

Keyboard Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

Check the keyboard cable  —   Ensure that the keyboard cable is firmly connected to the computer. Shut down the computer, reconnect the keyboard cable as shown in the Quick Reference Guide for your computer, and then restart the computer. Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins. Remove keyboard extension cables and connect the keyboard directly to the computer.

Test the keyboard  —  Connect a properly working keyboard to the computer, and try using the keyboard. If the new keyboard works, the original keyboard is faulty.

Run the Dell Diagnostics

Check for software and hardware conflicts

Lockups and Software Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

NOTE: If you installed a unique image on your computer or if you had to reinstall your operating system, run the DSS utility. DSS is available on your Drivers and Utilities CD and at support.dell.com.

NOTE: You must use Microsoft® Windows® XP Service Pack 1 or later when you reinstall Windows XP.

The computer does not start up

Check the Diagnostic Lights

Ensure that the power cable is firmly connected to the computer and to the electrical outlet

The computer stops responding

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.

A program stops responding

End the program  —   Windows XP, Windows 2000 Press <Ctrl><Shift><Esc> simultaneously. Click Applications. Click the program that is no longer responding. Click End Task.

A program crashes repeatedly

NOTE: Software usually includes installation instructions in its documentation or on a floppy disk or CD.

Check the software documentation  —  If necessary, uninstall and then reinstall the program.

A solid blue screen appears

Ensure that the original installed version of Windows XP is installed on your computer

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.

Other software problems

Check the software documentation or contact the software manufacturer for troubleshooting information  —   Ensure that the program is compatible with the operating system installed on your computer. Ensure that your computer meets the minimum hardware requirements needed to run the software. See the software documentation for information. Ensure that the program is installed and configured properly. Verify that the device drivers do not conflict with the program. If necessary, uninstall and then reinstall the program.

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

Run the Dell Diagnostics  —  If all tests run successfully, the error condition is related to a software problem.

Memory Problems

NOTE: Your computer might emit a series of beeps (beep code) during start-up if the monitor cannot display errors or problems. This series of beeps identifies a problem. See "Beep Codes" for more information.

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

If you receive an insufficient memory message  —   Save and close any open files and exit any open programs you are not using to see if that resolves the problem. See the software documentation for minimum memory requirements. If necessary, install additional memory. Reseat the memory modules to ensure that your computer is successfully communicating with the memory. Run the Dell Diagnostics.

If you experience other memory problems  —   Reseat the memory modules to ensure that your computer is successfully communicating with the memory. Ensure that you are following the memory installation guidelines. Run the Dell Diagnostics.

Mouse Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

Check the mouse cable  —   Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins. Remove mouse extension cables, if used, and connect the mouse directly to the computer. Shut down the computer, reconnect the mouse cable as shown in the Quick Reference Guide for your computer, and then restart the computer.

Restart the computer  —   Simultaneously press <Ctrl><Esc> to display the Start menu. Type u, press the keyboard arrow keys to highlight Shut down or Turn Off, and then press <Enter>. After the computer turns off, reconnect the mouse cable as shown on the in the Quick Reference Guide for your computer. Start the computer.

Test the mouse  —  Connect a properly working mouse to the computer, and try using the mouse. If the new mouse works, the original mouse is faulty.

Check the mouse settings  —   Windows XP Click the Start button, click Control Panel, and then click Printers and Other Hardware. Click Mouse. Try adjusting the settings. Windows 2000 Click the Start button, point to Settings, and then click Control Panel. Double-click the Mouse icon. Try adjusting the settings. If you are using a PS/2 mouse Enter system setup and ensure that the Mouse Port option is set to On. Exit system setup and restart the computer.

Reinstall the mouse driver

Run the Dell Diagnostics

Check for software and hardware conflicts

Network Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located 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 jack.

Check the network lights on the front or back of the computer depending on system chassis type.  —  No connection speed 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.

Check for software and hardware conflicts

Power Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

If the power light is green and the computer is not responding  —  See "Diagnostic Lights."

If the power light is blinking green  —  The computer is in standby mode. Press a key on the keyboard or move the mouse to resume normal operation.

If the power light is off  —  The computer is either turned off or is not receiving power. Reseat the power cable into both the power connector on the back of the computer and the electrical outlet. If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power strip is turned on. Also bypass power protection devices, power strips, and power extension cables to verify that the computer turns on properly. Ensure that the electrical outlet is working by testing it with another device, such as a lamp. Ensure that the main power cable and front panel cable are securely connected to the system board.

If the power light is amber and green or steady amber  —  A device might be malfunctioning or incorrectly installed. Remove and then reinstall the memory modules. Remove and then reinstall any cards. Remove and then reinstall the graphics card, if applicable.

If the power light is blinking amber  —  The computer is receiving electrical power, but an internal power problem might exist. Ensure that the voltage selection switch is set to match the AC power at your location (if applicable). Ensure that the processor power cable is securely connected to the system board.

Eliminate interference  —  Some possible causes of interference are: Power, keyboard, and mouse extension cables Too many devices on a power strip Multiple power strips connected to the same electrical outlet

Printer Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

NOTE: If you need technical assistance for your printer, contact the printer's manufacturer.

Check the printer documentation  —  See the printer documentation for setup and troubleshooting information.

Ensure that the printer is turned on

Check the printer cable connections  —   See the printer documentation for cable connection information. Ensure that the printer cables are securely connected to the printer and the computer.

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  —   Windows XP Click the Start button, click Control Panel, and then click Printers and Other Hardware. Click View installed printers or fax printers. If the printer is listed, right-click the printer icon. Click Properties and click the Ports tab. For a parallel printer, ensure that the Print to the following port(s): setting is LPT1 (Printer Port). For a USB printer, ensure that the Print to the following port(s): setting is USB. Windows 2000 Click the Start button, point to Settings, and then click Printers. If the printer is listed, right-click the printer icon. Click Properties and click the Ports tab. For a parallel printer, ensure that the Print to the following port(s): setting is LPT1 (Printer Port). For a USB printer, ensure that the Print to the following port(s): setting is USB.

Reinstall the printer driver  —  See the printer documentation for instructions

Restoring Default Settings

To restore the computer's system settings to their default values —   Turn on or restart your computer. When Press <F2> to Enter Setup appears in the upper-right corner of the screen, press <F2> immediately. If you wait too long and the Microsoft® Windows® logo appears, continue to wait until you see the Windows desktop. Then shut down your computer through the Start menu and try again. Under System Management, select the Maintenance option and follow the directions on the screen.

Serial or Parallel Device Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

NOTE: If you are having a problem with a printer, see "Printer Problems."

Check the option setting  —  See the device's documentation for the recommended settings. Then enter system setup and ensure that the Serial Port #1 setting (or the Serial Port #2 settings if you have an optional serial port adapter installed) or the LPT Port Mode setting matches the recommended settings.

Run the Dell Diagnostics

Sound and Speaker Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

No sound from speakers

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 speaker cable connections  —  Ensure that the speakers are connected as shown on the setup diagram supplied with the speakers. If you purchased an audio card, ensure that the speakers are connected to the card.

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.

Enable digital mode  —  Your speakers do not work if the CD drive is operating in analog mode. Windows XP Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices. Click Sounds and Audio Devices. Click the Hardware tab. Double-click the name of your CD drive. Click the Properties tab Check the Enable digital CD audio for this CD-ROM device box. Windows 2000 Click the Start button, point to Settings® Control Panel, and then click Sounds and Multimedia. Click the Hardware tab. Click the name of your CD drive and click Properties. Click the Properties tab. Check the Enable digital CD audio for this CD-ROM device box.

Eliminate possible interference  —  Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.

Run the speaker diagnostics

Reinstall the audio driver

Check the device option setting  —  Enter system setup and ensure that the Audio Controller option is set to On. Exit system setup and restart your computer.

Run the Dell Diagnostics

Check for software and hardware conflicts

No sound from headphones

Check the headphone cable connection  —  Ensure that the headphone cable is securely inserted into the headphone connector.

Disable digital mode  —  Your headphones do not work if the CD drive is operating in digital mode. Windows XP Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices. Click Sounds and Audio Devices. Click the Hardware tab. Double-click the name of your CD drive. Click the Properties tab. Uncheck the Enable digital CD audio for this CD-ROM device box. Windows 2000 Click the Start button, point to Settings® Control Panel, and then click Sounds and Multimedia. Click the Hardware tab. Click the name of your CD drive and click Properties. Click the Properties tab. Uncheck the Enable digital CD audio for this CD-ROM device box.

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.

Video and Monitor Problems

Fill out the Diagnostics Checklist as you complete these checks.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.

If the screen is blank

NOTE: See the monitor documentation for troubleshooting procedures.

Check the monitor cable connection  —   If you purchased a graphics card, ensure that the monitor is connected to the card. Ensure that your monitor is properly connected (see the Quick Reference Guide that came with your computer). If you are using a graphics extension cable and removing the cable solves the problem, the cable is defective. Swap the computer and monitor power cables to determine if the power cable is defective. Check the connector for bent or broken pins. (It is normal for monitor cable connectors to have missing pins.)

Check the monitor power light  —  If the power light is off, firmly press the button to ensure that the monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light is blinking, press a key on the keyboard or move the mouse.

Test the electrical outlet  —  Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

Test the monitor  —  Connect a properly working monitor to the computer, and try using the monitor. If the new monitor works, the original monitor is faulty.

Check the diagnostic lights

Check the card setting  —  Enter system setup and ensure that Primary Video option is set correctly. Exit system setup and restart your computer.

Run the monitor self-test  —  Check the monitor documentation for more information.

If the screen is difficult to read

Check the monitor settings  —  See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor self-test.

Move the subwoofer away from the monitor  —  If your speaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the monitor.

Move the monitor away from external power sources  —  Fans, fluorescent lights, halogen lamps, and other electrical devices can cause the screen image to appear "shaky." Turn off nearby devices to check for interference.

Adjust the Windows display settings  —   Windows XP Click the Start button, click Control Panel, and then click Appearance and Themes. Click Display and click the Settings tab. Try different settings for Screen resolution and Color quality. Windows 2000 Click the Start button, point to Settings, and then click Control Panel. Double-click the Display icon and click the Settings tab. Try different settings for Screen area or Desktop area.

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