Dell OptiPlex 745 Manuel utilisateur

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Solving Problems: Dell OptiPlex 745 User's Guide

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Solving Problems

Dell™OptiPlex™745 User's Guide

Troubleshooting Tips

Battery Problems

Card Problems

Drive Problems

E-Mail, Modem, and Internet Problems

Keyboard Problems

Fan Problems

Lockups and Software Problems

Media Card Reader Problems

Memory Problems

Mouse Problems

Network Problems

Power Problems

Printer Problems

Restoring Default Settings

Serial or Parallel Device Problems

Sound and Speaker Problems

Video and Monitor Problems

Troubleshooting Tips

Follow these tips when you troubleshoot your computer:

●If you added or removed a part before the problem started, review the installation procedures

and ensure that the part is correctly installed.

●If a peripheral device does not work, ensure that the device is properly connected.

●If an error message appears on the screen, write down the exact message. This message may

help technical support personnel diagnose and fix the problem(s).

●If an error message occurs in a program, see the program's documentation.

Battery Problems

Fill out the Diagnostics Checklist as you complete these checks.

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Solving Problems: Dell OptiPlex 745 User's Guide

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 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 (see Battery). If the battery still does not work properly, contact Dell (see

Contacting Dell).

Card 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 in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the

electrical outlet before opening the cover.

NOTICE: To prevent static damage to components inside your computer, discharge static

electricity from your body before you touch any of your computer's electronic components. You

can do so by touching an unpainted metal surface on the computer.

Check the card seating and cable —

1. Turn off the computer and devices, disconnect them from their electrical outlets,

wait 10 to 20 seconds, and then remove the computer cover (see the appropriate

"Removing the Computer Cover" section).

2. Ensure that each card is firmly seated in its connector. Reseat any loose cards.

3. Ensure that all cables are firmly connected to their corresponding connectors on the

cards. If any cables appear loose, reconnect them.

For instructions on which cables should be attached to specific connectors on a card,

see the card's documentation.

4. Close the computer cover reconnect the computer and devices to electrical outlets,

and then turn them on (see Replacing the Computer Cover).

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Test the graphics card —

1. Turn off the computer and devices, disconnect them from their electrical outlets,

wait 10 to 20 seconds, and then remove the computer cover (see the appropriate

"Removing the Computer Cover" section).

2. Remove all cards except the graphics card. See the appropriate "Cards" section for

your computer.

If your primary hard drive is connected to a drive controller card and not to one of

the system board IDE connectors, leave the drive controller card installed in the

computer.

3. Close the computer cover (see Replacing the Computer Cover), reconnect the

computer and devices to electrical outlets, and then turn them on.

4. Run the Dell Diagnostics. See Dell Diagnostics.

Test the cards —

1. Turn off the computer and devices, disconnect them from their electrical outlets,

wait 10 to 20 seconds, and then remove the computer cover (see the appropriate

"Removing the Computer Cover" section for your computer).

2. Reinstall one of the cards that you removed previously. See see appropriate

"Cards" section for your computer.

3. Close the computer cover, reconnect the computer and devices to electrical outlets,

and then turn them on (see Replacing the Computer Cover).

4. Run the Dell Diagnostics. See Dell Diagnostics.

If any of the tests fail, the card you just reinstalled is faulty and needs to be replaced.

5. Repeat this process until you have reinstalled all cards.

Drive Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety

instructions in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the

electrical outlet before opening the cover.

NOTICE: To prevent static damage to components inside your computer, discharge static

electricity from your body before you touch any of your computer's electronic components. You

can do so by touching an unpainted metal surface on the computer.

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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 bootable media and restart the computer.

Clean the drive or disk —See Cleaning Your Computer.

Check the cable connections

Check for Software and Hardware Conflicts —See Resolving Software and Hardware

Incompatibilities.

Run the Dell Diagnostics —See Dell Diagnostics.

Optical drive problems

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.

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

your computer documentation for information on Power Management modes. See

Advanced Features.

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Hard drive problems

Run Check Disk —

1. Click the Start button and click My Computer.

2. Right-click Local Disk C:.

3. Click Properties.

4. Click the Tools tab.

5. Under Error-checking, click Check Now.

6. Click Scan for and attempt recovery of bad sectors.

7. Click Start.

E-Mail, Modem, and Internet Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety

instructions in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the

electrical outlet before opening the cover.

NOTICE: To prevent static damage to components inside your computer, discharge static

electricity from your body before you touch any of your computer's electronic components. You

can do so by touching an unpainted metal surface on the computer.

NOTE: Connect the modem to an analog telephone jack only. The modem does not operate

while it is connected to a digital telephone network.

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 —

1. Click the Start button and click Control Panel.

2. Click Printers and Other Hardware.

3. Click Phone and Modem Options.

4. Click the Modems tab.

5. Click the COM port for your modem.

6. Click Properties, click the Diagnostics tab, and then click Query Modem to

verify that the modem is communicating with Windows.

If all commands receive responses, the modem is operating properly.

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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.

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 —See Dell Diagnostics.

Check for software and hardware conflicts —see Resolving Software and Hardware

Incompatibilities.

Fan Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety

instructions in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the

electrical outlet before opening the cover.

NOTICE: To prevent static damage to components inside your computer, discharge static

electricity from your body before you touch any of your computer's electronic components. You

can do so by touching an unpainted metal surface on the computer.

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Check the cable connections —Ensure that the card fan cable is connected firmly to

the card fan connector on the system board (see the appropriate "System Board

Components" section for your computer).

Lockups and Software Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety

instructions in the Product Information Guide.

The computer does not start up

Check the Diagnostic Lights —See 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 —

1. Press <Ctrl><Shift><Esc> simultaneously.

2. Click Applications.

3. Click the program that is no longer responding.

4. Click End Task.

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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

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. See Dell Diagnostics.

Media Card Reader Problems

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No drive letter is assigned —

When Microsoft Windows XP detects the Media Card Reader, the device is automatically

assigned a drive letter as the next logical drive after all other physical drives in the

system. If the next logical drive after the physical drives is mapped to a network drive,

Windows XP does not automatically assign a drive letter to the Media Card Reader.

To manually assign a drive for the Media Card Reader:

1. Right-click My Computer and select Manage.

2. Select the Disk Management option.

3. Right-click the corresponding drive letter in the right pane that needs to be

changed.

4. Select Drive Letter and Paths.

5. From the drop-down list, select the new drive letter assignment for the Media Card

Reader.

6. Click OK to confirm your selection.

NOTE: Each slot in the Media Card Reader is mapped to a drive letter. A Media Card

Reader slot only appears as a mapped drive when a media card is installed in it. If you

attempt to access a drive that is mapped to an empty Media Card Reader slot, you are

prompted to insert media.

FlexBay device is Disabled —

There is a FlexBay disable option in the BIOS setup that appears only when the FlexBay

device is installed. If the FlexBay device is physically installed, but it is not running, check

to see if it is enabled in the BIOS setup.

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.

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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 (see Installing Memory).

●Reseat the memory modules to ensure that your computer is successfully

communicating with the memory (see Memory).

●Run the Dell Diagnostics (see Dell Diagnostics).

If you experience other memory problems —

●Reseat the memory modules to ensure that your computer is successfully

communicating with the memory (see Installing Memory).

●Ensure that you are following the memory installation guidelines (see Memory).

●Run the Dell Diagnostics (see 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 —

1. Check the cable connector for bent or broken pins and for damaged or frayed

cables. Straighten bent pins.

2. Remove mouse extension cables, if used, and connect the mouse directly to the

computer.

3. Shut down the computer, reconnect the mouse cable as shown in the Quick

Reference Guide for your computer, and then restart the computer.

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