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Dell Precision™ Workstations 450 and 650 User's Guide
Information About Your Computer Advanced Troubleshooting
Finding Information for Your Computer Diagnostic Lights
Specifications Beep Codes
Caring for Your Computer Dell Diagnostics
About Your Computer—Dell Precision 650 Using System Restore
Resolving Software and Hardware Incompatibilities
Cleaning Your Computer
Inside Your Computer
System Board Components Before Cleaning Your Computer
NOTE: A NOTE indicates important information that helps you make better use of your computer. 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 potential for property damage, personal injury, or death. For a complete list of abbreviations and acronyms, see the Glossary. If you purchased a Dell™ n Series computer, any references in this document to Microsoft® Windows® operating systems are not
Back to Contents Page Advanced Troubleshooting Dell Precision™ Workstations 450 and 650 User's Guide Diagnostic Lights Beep Codes Dell Diagnostics Drivers Using System Restore Resolving Software and Hardware Incompatibilities Diagnostic Lights System Lights Located on the front of the computer, these lights can indicate a computer problem. Power Light Hard- Problem Description Suggested Resolution Drive Light Solid green N/A Power is on, and the computer is op
and then press the power button. If the problem is still not resolved, contact Dell for technical assistance. The computer is in a normal off condition; Press the power button to turn the computer on. the computer is connected to its electrical outlet. If the computer does not turn on, ensure that the front-panel power light is on. If the power light is off, ensure that the computer is connected to a working electrical outlet and then press the power button. If the problem is sti
occurred. Memory modules are detected, but a 1. Reseat the memory modules to ensure that your computer is successfully communicating memory failure has occurred. with the memory. 2. Restart the computer. 3. If the problem still exists, remove all the memory modules and install one memory module in memory module connector 4. 4. Restart the computer. The following message appears: Alert! Operating in Debug Mode. Please Populate Memory in Pairs for Normal Operation . 5
error exists. Verify that the memory modules that you are installing are compatible with your computer (see "Memory"). Reinstall the memory modules and then restart the computer. If the problem persists, contact Dell. A possible system board resource and/or Perform the procedure in "System Board Problems" and see "Resolving Software and Hardware hardware failure has occurred. Incompatibilities." If the problem persists, contact Dell. A possible expansion card failure has 1. De
4-2-1 No time tick 4-2-2 Shutdown failure 4-2-3 Gate A20 failure 4-2-4 Unexpected interrupt in protected mode 4-3-1 Memory failure above address 0FFFFh 4-3-3 Timer-chip counter 2 failure 4-3-4 Time-of-day clock stopped 4-4-1 Serial or parallel port test failure 4-4-2 Failure to decompress code to shadowed memory 4-4-3 Math-coprocessor test failure 4-4-4 Cache test failure Dell Diagnostics When to Use the Dell Diagnostics If you experience a problem with your computer, perform the
NOTE: This feature changes the boot sequence for one time only. On the next start-up, the computer boots according to the devices specified in system setup. 3. When the boot device list appears, highlight IDE CD-ROM Device and press
Identifying Drivers Windows XP 1. Click the Start button and click Control Panel. 2. In the Control Panel window, under Pick a Category, click Performance and Maintenance. 3. In the Performance and Maintenance window, click System. 4. In the System Properties window, click the Hardware tab. 5. Click Device Manager. 6. In the Device Manager window, scroll down the list to see if any device has an exclamation point (a yellow circle with a [!]) on the device icon.
Using System Restore ® ® The Microsoft Windows XP operating system provides System Restore to allow you to return your computer to an earlier operating state (without affecting data files) if changes to the hardware, software, or other system settings have left the computer in an undesirable operating state. See Windows Help for information on using System Restore. NOTICE: Make regular backups of your data files. System Restore does not monitor your data files or recover them. Creating
Resolving Software and Hardware Incompatibilities Windows XP ® ® Microsoft Windows XP IRQ conflicts occur if a device either is not detected during the operating system setup or is detected but incorrectly configured. To check for conflicts on a computer running Windows XP: 1. Click the Start button, and then click Control Panel. 2. Click Performance and Maintenance, and then click System. 3. Click the Hardware tab, and then click Device Manager. 4. In the Device Manager
Back to Contents Page Advanced Features Dell Precision™ Workstations 450 and 650 User's Guide LegacySelect Technology Control Manageability Security Password Protection System Setup Jumper Settings Power Button TAPI Hyper-Threading IEEE 1394 U320 SCSI Controller Integrated Striping LegacySelect Technology Control LegacySelect technology control offers legacy-full, legacy-reduced, or legacy-free solutions based on common platforms, hard-drive images,
Dell OpenManage Client Instrumentation is software that enables remote management programs such as IT Assistant to do the following: l Access information about your computer, such as how many processors it has and what operating system it is running l Monitor the status of your computer, such as listening for thermal alerts from temperature probes or hard-drive failure alerts from storage devices l Change the state of your computer, such as updating its BIOS or shutting it down remote
Option Settings You cannot change or enter a new system password if either of the following two options is displayed: l Enabled — A system password is assigned. l Disabled — The system password is disabled by a jumper setting on the system board. You can only assign a system password when the following option is displayed: l Not Enabled — A system password has not been assigned and the password jumper on the system board is in the enabled position (the default). Assigning a Syst
NOTE: You can use Password Status in conjunction with System Password and Setup Password to further protect your computer from unauthorized changes. Deleting or Changing an Existing System Password 1. Enter system setup and verify that Password Status is set to Unlocked. 2. Restart your computer. 3. When prompted, type the system password. 4. Press
CAUTION: Before you open the computer cover, see the safety instructions in the System Information Guide. 1. Open the computer cover. 2. Remove the jumper plug labeled "PSWD" from the jumper. See "Jumper Settings" to locate the password jumper. 3. Close the computer cover. 4. Reconnect your computer and devices to electrical outlets and turn them on. This disables the existing password(s). 5. Enter system setup and verify that Setup Password is set to Disabled. 6.
Moves to the previous field. Cycles through the options in a field. In many fields, you can also type the appropriate value. Scrolls through help information. Enters the selected field's pop-up options menu. spacebar or In the selected field's pop-up options menu, cycles through the options in a field. Exits system setup without restarting the computer and returns the computer to the boot routine. Exits system setup and restarts the computer, implementing
NOTE: To ensure an orderly computer shutdown, consult the documentation that came with your operating system. The Boot Device Menu appears, listing all available boot devices. Each device has a number next to it. At the bottom of the menu, enter the number of the device that is to be used for the current boot only. Changing Boot Sequence for Future Boots 1. Enter system setup. 2. Use the arrow keys to highlight the Boot Sequence menu option and press
NOTE: When two COM connectors share an IRQ setting, you can use either connector as necessary, but you may not be able to use them ® ® both at the same time. If you are running the Microsoft Windows 95 or IBM OS/2 operating system, you cannot use both serial connectors at the same time. If the second connector (COM3 or COM4) is also in use, the integrated connector is turned off. l Parallel Port — The settings are Mode, I/O Address, and DMA Channel. Mode settings are PS/2, EPP, ECP, AT,
Secondary Master: CD - ROM Reader If the computer detects a device during the scan, it sets the device to Auto in system setup. If no device is listed, it sets the device setting to Off in system setup. If your computer does not reset after you perform these steps, enter system setup and reset the computer to its original factory settings: 1. Restart your computer. 2. As the computer restarts, press