Throughout this guide, there may be blocks of text printed in bold type or in italic type. These blocks are notes, notices, and cautions, and they are

used as follows:

NOTE: A NOTE indicates important information that helps you make better use of your system.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate

injury.

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, OptiPlex, OptiFrame, Dell OpenManage, Dimension, Latitude, Inspiron, and DellWare are trademarks of Dell Computer Corporation;

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Corporation; 3Com is a registered trademark of 3Com Corporation; IBM and OS/2 are registered trademarks of International Business Machines Corporation; Novell and

NetWare are registered trademarks of Novell, Inc. As an ENERGY STAR Partner, Dell Computer Corporation has determined that this product meets the ENERGY STAR

guidelines for energy efficiency.

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disclaims any proprietary interest in trademarks and trade names other than its own.

Initial release: 18 May 1999

Last revised: 17 Jan 2001

Table of Contents

Troubleshooting

Summary of Contents for Dell OptiPlex GX100

Page 1 Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
Page 2: Backing Up Your Files
Overview If your Dell computer system is not working as expected, and if you are not sure what to do, start your troubleshooting with the procedures in this section. This section guides you through basic steps to solve basic computer problems. It also directs you to further detailed troubleshooting information and procedures to solve more complex problems.
Page 3: Look And Listen
See "Getting Help" for instructions on getting technical assistance from Dell. when you access a drive The absence of a familiar When you turn on your system, you can hear the hard-disk drive spin up, and the system tries to access the boot sound files from the hard-disk drive or the diskette drive.
Page 4: System Setup
This problem can happen if you changed your system's hardware configuration and forgot to run System Setup. To correct this problem, enter System Setup, correct the setting for the corresponding System Setup program option, and reboot your system. If after checking the settings in System Setup you have not resolved the problem, see "Dell Diagnostics." Back to Contents Page...
Page 5: Replacing The Battery
Back to Contents Page Battery: Dell™ OptiPlex™ GX100 System User's Guide Overview Replacing the Battery Overview A 3.0-volt (V) CR2032 coin-cell battery installed on the system board maintains system configuration, date, and time information in a special section of memory. The operating life of the battery can extend up to ten years. The battery may need replacing if an incorrect time or date is displayed during the boot...
Page 6 1 Battery 2 Battery socket 5. Replace the computer cover, reconnect your computer and peripherals to their electrical outlets, and turn them on. 6. Enter System Setup, and confirm that the battery is operating properly. Enter the correct time and date through System Setup's System Time System Date options.
Page 7: International Dialing Codes
Asia and Other Regions Contact Numbers Americas Contact Numbers Overview When you need to contact Dell, use the telephone numbers, codes, and electronic addresses provided in the following sections. "International Dialing Codes" provides the various codes required to make long-distance and international calls.
Page 8 Area Code Toll-Free Number Brazil Customer Support, Technical Support toll free: 0800 90 3355 Sales toll free: 0800 90 3366 Web site: http://www.dell.com/br Canada Automated Order-Status System toll free: 1-800-433-9014 (North York, Ontario) AutoTech (Automated technical support) ...
Page 9 Customer Service toll free: 1-800-624-9897 (Credit Return Authorization Numbers) National Accounts (systems purchased by established Dell national accounts [have your account number handy], medical institutions, or value-added resellers [VARs]): Customer Service and Technical Support (Return toll free: 1-800-822-8965...
Page 10 Support and Customer Preferred Accounts/Corporate Customer Care 0660-8056 Care. Home/Small Business Technical Support 795676-04 Preferred Accounts/Corporate Technical Support 0660-8779 Web site: http://support.euro.dell.com E-mail: tech_support_germany@dell.com Belgium (Brussels) Technical Support 481 92 88 Customer Care 481 91 19 Home/Small Business Sales ...
Page 11 Fax 0825 004 701 Switchboard 0825 004 700 Switchboard (Alternative) 99 75 40 00 Sales 0825 004 700 Web site: http://support.euro.dell.com E-mail: web_fr_tech@dell.com Corporate Technical Support 0825 004 719 Customer Care 0825 338 339 Fax ...
Page 12 481 91 00 for sales, customer, and Customer Care (Brussels, Belgium) 481 91 19 technical assistance. Switchboard (Brussels, Belgium) 481 91 00 Fax (Brussels, Belgium) 481 92 99 Web site: http://support.euro.dell.com E-mail: tech_be@dell.com Netherlands Technical Support 581 8838...
Page 13 Technical Support 902 100 130 Customer Care 902 118 546 Switchboard 722 92 00 91 722 95 83 Web site: http://support.euro.dell.com E-mail: web_esp_tech@dell.com Sweden Technical Support 590 05 199 (Upplands Vasby) Relational Customer Care 590 05 642 ...
Page 14 Technical Support Outside of Japan (Dimension and Inspiron) 81-44 520-1167 Technical Support (Dell Precision™, OptiPlex™, toll free: 0120-1984-33 and Latitude™) Technical Support Outside of Japan (Dell Precision, 81-44 556-3894 OptiPlex, and Latitude) Customer Care 556-4240 24-Hour Automated Order Status Service 556-3801 Home and Small Business Group Sales...
Page 15 Technical Support 709 7710 (Johannesburg) Customer Care 709 7707 Sales 709 7700 706 0495 Switchboard 709 7700 Web site: http://support.euro.dell.com E-mail: dell_za_support@dell.com Southeast Asian/Pacific Customer Technical Support, Customer Service, 60 4 633-4810 and Sales (Penang, Malaysia)
Page 16: Before You Start Testing
Dell's service and support personnel. NOTICE: Only use the Dell Diagnostics to test your Dell computer system. Using this program with other computers may cause incorrect computer responses or result in error messages.
Page 17: Advanced Testing
8. Select Quick Tests from the Test All Devices or Test One Device option to perform a quick check of your computer or a specific device. Quick Tests runs only the subtests that run fast and do not require user interaction. Dell recommends that you select Quick Tests first to increase your chance of locating the problem quickly.
Page 18 Keys Explains the functions of all keystrokes that can be used in the Dell Diagnostics Device Group Describes the highlighted group in the Device Groups list on the main menu and provides reasons for using certain...
Page 19 Back to Contents Page Diskette, Tape, and CD-ROM Drives: Dell™ OptiPlex™ GX100 System User's Guide Installing a CD-ROM Drive in a Small-Form-Factor Chassis Installing a Diskette, Tape, or CD-ROM Drive in a Mini Tower Chassis Installing a Diskette, Tape, or CD-ROM Drive in a Low-Profile Connecting Drives...
Page 20 "Primary Drive n and Secondary Drive n" for more information. 8. Verify that your system works correctly by running the Dell Diagnostics. Installing a Diskette, Tape, or CD-ROM Drive in a Low-Profile Chassis To install a diskette, tape, or CD-ROM drive in a 5.25-inch drive bay in a low-profile chassis, perform the following steps.
Page 21 If a drive is already installed in the bay and you are replacing it, be sure to disconnect the DC power cable and interface cable from the back of the drive before you remove the drive/bracket assembly. To remove the old drive from the bracket, turn the drive/bracket assembly upside down and unscrew the four screws that secure the drive to the bracket (see Figure 5).
Page 22 Diagnostics. NOTE: Tape drives sold by Dell come with their own operating software and documentation. After you install a tape drive, refer to the documentation that came with the drive for instructions on installing and using the tape drive software.
Page 23 2. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover." 3. Remove the front bezel (mini tower only) as instructed in "Removing and Replacing the Front Bezel." 4. Remove the drive bracket from the bay you want to use. a.
Page 24 (A or B) to reflect the size and capacity of your new diskette drive. For EIDE CD-ROM and tape drives, set the appropriate Secondary Drive option (0 or 1) to Auto. 14. Verify that your system works correctly by running the Dell Diagnostics.
Page 25: Connecting Drives
NOTE: Tape drives sold by Dell come with their own operating software and documentation. After you install a tape drive, refer to the documentation that came with the drive for instructions on installing and using the tape drive software. Connecting Drives When you install a drive, you connect two cables—a DC power cable and an interface cable—to the back of the drive.
Page 26 NOTE: If you choose one of the optional riser boards with ISA expansion-card connectors, evaluate the performance of any ISA expansion cards on a single system before you order other ISA riser boards. Dell recommends this step due to the broad range of ISA implementations in the computer industry.
Page 27 1 Auxiliary power indicator (AUX_LED) 2 Remote Wakeup header (WOL) 3 PCI expansion-card connector 1 (PCI1) 4 PCI expansion-card connector 2 (PCI2) 5 PCI expansion-card connector 3 (PCI3) Figure 4. Low-Profile Chassis PCI/ISA Riser Board (Optional) 1 Standby power indicator (AUX_LED) 2 ISA expansion slot 1 (ISA1) 3 ISA expansion slot 2 (ISA2) 4 Remote Wakeup header (WOL)
Page 28: Installing An Expansion Card
Installing an Expansion Card To install an expansion card, perform the following steps. CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their electrical outlets, and then wait at least 5 seconds before you remove the computer cover. Also, before you install an expansion card, see the other precautions in "Safety First—For You and Your Computer."...
Page 29: Removing An Expansion Card
1 Expansion card 2 Card-edge connector 3 Riser board 4 Expansion-card connector 5 Expansion-card cage Figure 10. Installing an Expansion Card in a Mini Tower Chassis 1 Expansion-card cage 2 Card-edge connector 3 Expansion card 4 Riser board 5 Expansion-card connector 5.
Page 30 2. If necessary, disconnect any cables connected to the card. 3. Unscrew the mounting bracket of the card you want to remove. 4. Grasp the card by its outside corners, and ease it out of its connector. 5. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening. NOTE: You must install filler brackets over empty card-slot openings to maintain Federal Communications Commission (FCC) certification of the system.
Page 31: Troubleshooting The Monitor
"Checking Connections and Switches." Then perform the troubleshooting procedures for the equipment that is malfunctioning. You need a copy of the Dell ResourceCD to perform the procedures in this section. Before running the Dell Diagnostics make sure that your system is set to boot from the CD-ROM drive. See "Starting the Dell...
Page 32: Troubleshooting The Mouse
2. If the mouse or its cable shows signs of physical damage or if the buttons do not work, replace the mouse with a working mouse. 3. Start the Dell Diagnostics by inserting the Dell ResourceCD into the CD-ROM drive and rebooting the system. 4. Run the Mouse Test. 5. If the Mouse Test fails, the system board may be faulty. See "Getting...
Page 33: Troubleshooting A Serial I/O Device
See the documentation for the printer and for your operating system for instructions on reinstalling the printer driver. 2. Turn off the parallel printer and computer, replace the parallel printer interface cable with a known working cable, and turn on the parallel printer and computer.
Page 34 Back to Contents Page Getting Help: Dell™ OptiPlex™ GX300 System User's Guide Help Overview Contacting Dell Back to Contents Page...
Page 35 Back to Contents Page Hard-Disk Drives: Dell™ OptiPlex™ GX100 System User's Guide General Information About EIDE Hard-Disk Drives Installing an EIDE Hard-Disk Drive in a Low-Profile Chassis Installing an EIDE Hard-Disk Drive in a Small-Form-Factor Installing an EIDE Hard-Disk Drive in a Mini Tower Chassis Chassis General Information About EIDE Hard-Disk Drives The small form-factor and low-profile chassis support a single enhanced integrated drive electronics (EIDE) hard-disk drive in the hard-disk drive bay.
Page 36 1 Drive shelf 2 Release tabs (2) 5. Remove the drive bracket from the chassis. a. If a drive is already installed in the bracket, disconnect the power and interface cables from the back of the drive. b. Squeeze the tabs on each side of the drive bracket, and slide it forward about one inch (see Figure 2). Figure 2.
Page 37 14. Partition and logically format your drive before proceeding to the next step. See the documentation for your operating system for instructions. 15. Test the hard-disk drive by running the Dell Diagnostics. 16. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.
Page 38 CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from electrical outlets, and then wait at least 15 seconds before you remove the computer cover. Also, before you install a drive, see "Safety First —...
Page 39 16. Partition and logically format your drive before you proceed to the next step. See the documentation for your operating system for instructions. 17. Test the hard-disk drive by running the Dell Diagnostics. 18. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.
Page 40 NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that will sufficiently cushion it. Check the documentation for the drive to verify that it is configured for your computer system. Remove the computer cover.
Page 41 1 Drive-cage slide rail 2 Chassis slots 3 Hinge tabs 4 Sliding tabs 8. Connect a power cable to the power input connector on the back of the drive (see Figure 12). Check all connectors to be certain that they are properly cabled and firmly seated. 9.
Page 42 See the documentation for your operating system for instructions. 17. Test the hard-disk drive by running the Dell Diagnostics. 18. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive. For instructions, refer to the documentation that came with your operating system.
Page 43: Technical Assistance
World Wide Web The Internet is your most powerful tool for obtaining information about your computer and other Dell products. Through the Internet, you can access most of the services described in this section, including AutoTech, TechFax, order status, technical support, and product information.
Page 44: Problems With Your Order
TechFax Service Dell takes full advantage of fax technology to serve you better. Twenty-four hours a day, seven days a week, you can call the Dell TechFax line toll- free for all kinds of technical information. Using a touch-tone phone, you can select from a full directory of topics. The technical information you request is sent within minutes to the fax number you designate.
Page 45: Before You Call
Returns that are missing any of the preceding requirements will be refused at our receiving dock and returned to you. Before You Call NOTE: Have your Express Service Code ready when you call. The code helps Dell's automated-support telephone system direct your call more efficiently.
Page 46 Back to Contents Page Front-Panel Inserts: Dell™ OptiPlex™ GX100 System User's Guide Low-Profile Chassis Front-Panel Inserts Mini Tower Chassis Front-Panel Inserts Low-Profile Chassis Front-Panel Inserts Empty drive bays contain a front-panel insert to protect the inside of the computer from dust particles and also to ensure proper airflow within the computer.
Page 47 Mini Tower Chassis Front-Panel Inserts Empty drive bays contain a front-panel insert to protect the inside of the computer from dust particles and also to ensure proper airflow within the computer. Before you install a drive in an empty drive bay, you must first remove the front-panel insert. To remove the insert covering a 5.25-inch bay, perform the following steps: 1.
Page 48: Internal Views
Back to Contents Page Inside Your Computer: Dell™ OptiPlex™ GX100 System User's Guide Overview System Board Labels Internal Views Rotating the Power Supply Away From the System Board (Mini Tower Chassis Only) System Board Components Removing and Replacing the Front Bezel (Mini Tower Chassis Only) System Board Jumpers...
Page 49 1 System board 2 Power supply 3 Drive cage 4 Internal hard-disk drive bracket 5 Expansion-card cage 6 Bottom of computer Figure Figure 5, and Figure 6 show the small-form-factor, low-profile, and mini tower chassis, respectively, with the cover removed. Figure 4.
Page 50: System Board Components
1 External drive bay 2 Internal drive cage 3 Chassis intrusion switch 4 Hard-disk drive interface cable 5 Expansion-card cage 6 System board 7 Riser board 8 Padlock ring 9 Security cable slot I/O ports and connectors 11 AC power receptacle 12 Power supply System Board Components Figure 7 shows the system board and the location of all its sockets and connectors.
Page 51: System Board Labels
Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The wire connects the pins and creates a circuit. To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated. NOTICE: Make sure your system is turned off and unplugged before you change a jumper setting.
Page 52: Removing And Replacing The Expansion-Card Cage
2. Disconnect the AC power cable from the AC power receptacle on the back of the power supply (see Figure 9). 3. Free the power supply from the securing tab labeled "RELEASE —>," and rotate it upward until it locks in its extended position. Figure 9.
Page 53 CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer." 1. Remove the computer cover as instructed in "Removing and Replacing the Computer Cover." Check any cables connected to expansion cards through the back-panel openings. Disconnect any cables that will not reach to where the cage must be placed upon removal from the chassis.
Page 54 1 Securing lever 2 Expansion-card cage 3 Slots (2) 4 Tab 4. Slide the expansion-card cage out of the chassis. 5. Lift the expansion-card cage up and away from the chassis. To replace the expansion-card cage in the low-profile chassis, perform the following steps: 1.
Page 55 1. With the securing lever in the upright position, align the slots in the left side of the expansion-card cage with the tabs on the back and bottom of the chassis (see Figure 13). Slide the expansion-card cage into place. 2.
Page 56 Back to Contents Page Installing Upgrades: Dell™ OptiPlex™ GX100 System User's Guide Inside Your Computer Battery Expansion Cards Hard-Disk Drives System Memory Diskette, Tape, and CD-ROM Drives Microprocessor Back to Contents Page...
Page 57: Safety First-For You And Your Computer
The procedures in this section require that you remove the cover and work inside your computer. While working inside your computer, do not attempt to service the computer except as explained in this guide and elsewhere in Dell documentation. Always follow the instructions closely.
Page 58 2. If you have installed a padlock through the padlock ring on the back panel, remove the padlock. 3. If your computer has a mini tower chassis, skip to step 4. If your computer has a small-form-factor or low-profile chassis, remove the computer cover as follows: a.
Page 59 1 Release button To replace the computer cover, perform the following steps: 1. Check all cable connections, especially those that might have come loose during your work. Fold cables out of the way so that they do not catch on the computer cover. Make sure cables are not routed over the drive cage—they will prevent the cover from closing properly. 2.
Page 60: Troubleshooting A Wet Computer
4. If your computer has a mini tower chassis, replace the computer cover as follows: a. Face the left side of the computer and hold the cover at a slight angle as shown in Figure 6. While aligning the top of the cover with the top of the chassis, insert the hooks on the cover into the recessed slots on the computer chassis.
Page 61: Troubleshooting A Damaged Computer
Help" for information on obtaining technical assistance from Dell. To troubleshoot a damaged computer, perform the following steps: 1. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their electrical outlets. Also, disconnect any telephone or telecommunication lines from the computer.
Page 62: Troubleshooting Expansion Cards
DIMM. If the Dell Diagnostics determines that the system board is faulty, or if the Dell Diagnostics does not identify the cause of the problem and the problem is still not resolved, see "Getting Help" for instructions on obtaining technical assistance.
Page 63: Troubleshooting The System Board
Dell ResourceCD and rebooting the system. 7. Run the appropriate test group for the drives. 8. If the Dell Diagnostics identifies a faulty drive, replace the drive. If the Dell Diagnostics identifies a faulty controller, the system board may be faulty. See "Getting...
Page 64 Back to Contents Page...
Page 65: Hardware Features
Dell OptiPlex GX100 Managed PC systems are designed around the Intel® Celeron™ microprocessors and offer dependability and customization for networked environments. Each computer system uses a high-performance Peripheral Component Interconnect (PCI) design that allows you to configure the computer system to your initial requirements and then add Dell-supported upgrades as necessary. Hardware Features Your system offers the following features: Socketed Celeron microprocessor.
Page 66: Manageability Features
Dell OpenManage IT Assistant The Dell OpenManage IT Assistant program (which is available as a download from the Dell Web site at http:\\www.dell.com or as a Dell- installed option on your hard-disk drive) is the Dell software-management application interface for DMI. It allows you to manage system-level information, such as system configuration information and MIF database values.
Page 67 Asset management features of the Dell OpenManage IT Assistant include the following: Support that enables network administrators to remotely view, enter, and modify an asset tag for a remote system in a Dell DMI network Automated and manual mapping of one or more groups to a user-defined directory Security management features of the Dell OpenManage IT Assistant include password security that enables network administrators to maintain standard attribute values for the local and remote systems in a Dell DMI network.
Page 68 Wake from ARP Wake from NetBIOS name lookup Directed wake packet The specification also defines Magic Packet as a wake-up method. Wake-up technology that uses PBM is controlled by the Microsoft Windows OS because the OS programs the patterns. Therefore, PBM only works in systems that use the Windows OS with ACPI enabled. For more information on PBM, please refer to the Network Device Class Power Management Specification.
Page 69: Energy Star Compliance
Web-Based Enterprise Management (WBEM) core components. For information about the WBEM core components and how to install them, see the Microsoft World Wide Web site at http:\\www.microsoft.com. For more information about CIM support, see the Dell OpenManage Client Instrumentation Version 5.0 User's Guide installed in the Dell Documents folder on your hard-disk drive.
Page 70: Installing Dimms
[ECC]). When you add system memory, you may install DIMMs in either socket. For optimum operation, Dell recommends that you install a DIMM in socket A first (closest to the processor) before installing a DIMM in socket B.
Page 71: Removing Dimms
8. When the System Memory total is correct, press <Esc> to exit System Setup. 9. Run the Dell Diagnostics to verify that the DIMMs are operating properly. Removing DIMMs To remove a DIMM, press the securing clips outward simultaneously until the DIMM disengages and pops out slightly from the socket (see Figure Figure 2.
Page 72: System Messages
For help in resolving this problem, please report the checkpoint code (nnnn) to the note this checkpoint and contact Dell support technician. Technical Support. Attachment failed to respond The diskette drive or hard-disk drive "Troubleshooting...
Page 73 Diskette read failure diskette may be faulty. Diskette subsystem reset failed The diskette drive controller may be Run the Diskette tests in the Dell faulty. Diagnostics. Drive not ready No diskette is in the drive. The Put a diskette in the drive or close the operation requires a diskette in the drive latch.
Page 74: System Beep Codes
Diagnostics. DIMMs may be loose. Power-on self-test (POST) has Once your computer finishes booting, WARNING: Dell's Disk Monitoring System has queried the enhanced integrated immediately back up your data and detected that drive [0/1] on the drive electronics (EIDE) drive for replace your hard-disk drive.
Page 75: Warning Messages
The beep code is a pattern of sounds: for example, one beep, followed by a second beep, and then a burst of three beeps (code 1-1-3) means that the computer was unable to read the data in nonvolatile random-access memory (NVRAM). This information is invaluable to the Dell support staff if you need to call for technical assistance.
Page 76: Diagnostics Messages
Diagnostics Messages When you run a test group or subtest in the Dell Diagnostics, an error message may result. These particular error messages are not covered in this section. Record the message on a copy of your Diagnostics Checklist found in "Getting...
Page 77: Upgrading The Microprocessor
Back to Contents Page Microprocessor: Dell™ OptiPlex™ GX100 System User's Guide Upgrading the Microprocessor Upgrading the Microprocessor NOTE: Dell recommends that only a technically knowledgeable person perform this procedure. CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer." To replace the microprocessor, perform the following procedure.
Page 78 1 Thumbscrews (2) 2 Cooling fan 3 Metal securing clip 4 Heat sink assembly 5 Microprocessor 6 ZIF socket 5. Release the metal securing clip that holds the heat sink assembly to the microprocessor zero insertion force (ZIF) connector. Press down on the folded part of the clip with a small screwdriver to release the clip (see Figure 3).
Page 79 1 Microprocessor 2 Socket release lever 3 ZIF socket NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. 8. Unpack the new microprocessor. If any of the pins on the chip appear to be bent, see "Getting Help"...
Page 80 NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. 19. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly. Back to Contents Page...
Page 81: Getting Started
After you correctly connect all the cables to your system and turn it on, see the setup guide for your operating system to complete its installation. When the operating system is installed, you can connect peripheral devices, such as a printer, or install application programs not already installed by Dell. Connecting Peripheral Devices Figure 1 shows the connectors on the back of your computer for attaching external devices.
Page 82 If you have the Microsoft® Windows® 98, Windows 95, or Windows NT® 4.0 operating system, Dell already installed the necessary mouse drivers on your hard-disk drive. If you need to reinstall the mouse drivers, see the documentation that accompanied your Dell ResourceCD for instructions.
Page 83: Controls And Indicators
Your system uses a PS/2-style keyboard. The keyboard cable attaches to a 6-pin miniature DIN connector on the back panel of your computer. Network Cable Requirements Your computer's NIC connector (an RJ45 connector located on the back panel) is designed for attaching an unshielded twisted pair (UTP) Ethernet cable.
Page 84: Chassis Intrusion
When the computer is turned on, pushing the power button and holding it for more than 6 seconds turns off the computer. When the computer is turned on, pushing the power button and releasing it places the computer in a suspended state that you determine through the BIOS configuration.
Page 85: Using The System Password Feature
Your Dell system is shipped to you without the system password feature enabled. If system security is a concern, operate your system only with system password protection.
Page 86 As you press each character key (or the spacebar for a blank space), a placeholder appears in the field. The password assignment operation recognizes keys by their location on the keyboard, without distinguishing between lowercase and uppercase characters. For example, if you have an M in your password, the system recognizes either M or m as correct. Certain key combinations are not valid.
Page 87: Using The Setup Password Feature
Using the Setup Password Feature Your Dell system is shipped to you without the setup password feature enabled. Since your system is also shipped with the DMI agent enabled and active (allowing system settings to be changed remotely), Dell strongly recommends that you enable and use the setup password feature to prevent unauthorized changes to system settings.
Page 88 CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer." 1. Remove the computer cover according to the instructions in "Removing and Replacing the Computer Cover." 2. Remove the jumper plug from the PSWD jumper to disable the password feature. Refer to "System Board Jumpers"...
Page 89: Ac Power Recovery
Back to Contents Page System Setup Options: Dell™ OptiPlex™ GX100 System User's Guide AC Power Recovery Primary Drive n and Secondary Drive n Asset Tag Remote Wake Up Auto Power On Report Keyboard Errors Boot Sequence System Data CPU ID System Date CPU Speed System Memory Diskette Drive A and Diskette Drive B...
Page 90: Cpu Speed
<Alt><b> to save the change and reboot the system. MBA UNDI then appears under Boot Sequence. When you select this option, the system prompts you to press <Ctrl><Alt><b> at the Dell logo screen during system boot. A menu then appears that allows you to select PXE, RPL, BootP, or NetWare as the active boot mode.
Page 91 Network Interface Controller determines whether the integrated NIC is On, Off, or On w/ MBA. The default is On. If you select On w/ MBA, you are prompted to press <Ctrl><Alt><b> at the Dell logo screen during system boot. A menu then appears that allows you to select PXE, RPL, BootP, or NetWare as the active boot mode.
Page 92: Keyboard Numlock
IDE Drive Interface enables or disables the system's integrated enhanced integrated drive electronics (EIDE) hard-disk drive interface. With Auto (the default) selected, the system turns off the integrated EIDE interface when necessary to accommodate a controller card installed in an expansion slot. As part of the boot routine, the system first checks for a primary hard-disk drive controller card installed in an expansion slot.
Page 93: Remote Wake Up
If you know the drive-type number Use the drive-type number you found in the documentation that came with the drive, or if the drive was installed by Dell when you purchased your system, access the Manufacturing Test Report from the Dell Accessories folder.
Page 94: System Data
The system's seven-character service tag number, which was programmed into NVRAM by Dell during the manufacturing process. Refer to this number during technical assistance or service calls. The service tag number is also accessed by certain Dell support software, including the diagnostics software.
Page 95: System Time
To lock the system password, you must first assign a setup password in Setup Password and then change the Password Status option to Locked. When Setup Password has a password assigned and Password Status is set to Locked, the system password cannot be changed through the System Password option and cannot be disabled at system start-up by pressing <Ctrl><Enter>.
Page 96: Installing And Configuring Software
Back to Contents Page Software Checks: Dell™ OptiPlex™ GX100 System User's Guide Overview Memory-Resident Programs Installing and Configuring Software Program Conflicts Error Messages Memory Address Conflicts Input Errors Interrupt Assignment Conflicts Overview Because most computers have several application programs installed in addition to the operating system, isolating a software problem can be confusing.
Page 97: Memory-Resident Programs
environment, you may need to reinstall a program that no longer runs properly. Memory-Resident Programs There are a variety of utilities and supplementary programs that can be loaded either when the computer boots or from an operating system prompt. These programs are designed to stay resident in system memory and thus always be available for use. Because they remain in the computer's memory, memory conflicts and errors can result when other programs require use of all or part of the memory already occupied by these TSR programs.
Page 98 IRQ12 Used by the mouse port IRQ13 Used by the math coprocessor (if applicable) IRQ14 Used by the primary integrated drive electronics (IDE) controller IRQ15 Used by the secondary IDE controller Back to Contents Page...
Page 99: System Information
Back to Contents Page Technical Specifications: Dell™ OptiPlex™ GX100 System User's Guide Processor Ports Memory Key Combinations System Information Controls and Indicators Graphics and Video Power Expansion Bus Physical Drives Environmental Processor Microprocessor type socketed Intel® Celeron™ microprocessor Internal cache 32-kilobyte (KB) first-level (16-KB data cache; 16-KB instruction cache)
Page 100: Expansion Bus
Expansion Bus Bus types Peripheral Component Interconnect (PCI), Industry-Standard Architecture (ISA) Bus speed PCI: 33 MHz ISA: 8.33 MHz Small form-factor chassis expansion-card connectors: PCI riser board two PCI expansion slots Low-profile chassis expansion-card connectors: PCI riser board three PCI expansion slots PCI/ISA riser board one PCI expansion slot;...
Page 101: Key Combinations
Personal System/2 (PS/2)- 6-pin mini-Deutsche Industrie Norm (DIN) style keyboard PS/2-compatible mouse 6-pin mini-DIN Universal Serial Bus (USB) two USB-compliant connectors Internally accessible: Primary EIDE hard-disk drive 40-pin connector on PCI local bus Secondary EIDE hard-disk 40-pin connector on PCI local bus drive Diskette drive 34-pin connector...
Page 102 Small-form-factor chassis: Height 9.1 cm (3.6 inches) Width 31.8 cm (12.5 inches) Depth 37.8 cm (14.9 inches) Weight 6.6 kilograms (kg) (14.5 pounds [lb]) Low-profile chassis: Height 10.9 centimeters (cm) (4.3 inches) Width 40.9 cm (16.1 inches) Depth 43.7 cm (17.2 inches) Weight 10.9 kg (24 lb) Mini tower chassis:...
Page 103 Back to Contents Page System Setup: Dell™ OptiPlex™ GX100 System User's Guide Using System Setup System Setup Options Back to Contents Page...
Page 104 Back to Contents Page Optional Stand: Dell™ OptiPlex™ GX100 System User's Guide Removing and Attaching the Small-Form-Factor or Low-Profile Chassis Optional Stand To remove the optional stand from the small-form-factor or low-profile chassis, perform the following steps: 1. Turn the computer over so that the stand is at the top.
Page 105: Entering System Setup
After you set up your system, run System Setup to familiarize yourself with your system configuration information and optional settings. Dell recommends that you print the System Setup screens (by pressing the <Print Screen> key) or record the information for future reference.
Page 106: System Setup Navigation Keys
System Setup Navigation Keys Table 1 lists the keys you use to view or change information on the System Setup screen and to exit the program. Table 1. System Setup Navigation Keys Keys Action Moves to the next field. or Moves to the previous field.
Page 107 Back to Contents Page Troubleshooting: Dell™ OptiPlex™ GX100 System User's Guide Basic Checks External Components Messages and Codes Internal Components Software Checks Getting Help Dell Diagnostics Back to Contents Page...

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